I think it's a wonderful thing that jetts are very bad. The game hasn't been this enjoyable in years. Personally I haven't had nearly as many issues with hit reg as you claim my shots land just fine. This for me atleast has been one of the most smooth releases the franchise has seen in years we should really be applauding these developers before we shame them for a "bad" product. You should have been around for like any other release in battlefield. But for balance changes I will say.
Vehicles.
Jetts
Keep jetts nerfed too the floor. It's just to oppressive of a vehicle if left unchecked nothing can really counter it besides other jetts in previous titles. (Maybe aa tanks if the Jett pilot isn't that good). I would even go as far as to say, you should nerf the jetts ability to like "stealth lock on" why I say this is because personally when a Jett locks onto me by the time I found out if they are close enough the missle has already hit me. Giving me a bit more warning would be nice and sometimes my flares just don't work against their rockets period which I'm sure is a bug I hope. The only reason they need to stay this way is because sure they are fun to go 100+ and 0 deaths in but doesn't that say something... the receiving end of these being a strong utility is just honestly not fun at all and leaves little to no counter play. Atleast if a heli is op, there is hacking, infantry AA, AA tank ( which we can't really kill that at all tbh) a Jett, and sometimes tanks depending on where they are at lol. But jetts on the other hand.. their counter play becomes don't fly too close to the AA tank, and if there isn't another Jett pilot of similar caliber you kinda just get clipped until the God Jett pilot gets bored or goes 140-0. It's not good for the longevity of the game. After the beta I went to battlefield 3 (jetts are more weak in this version btw) and the game was virtually unplayable. The moment your spotted in a helicopter you die in 1 strafe 95% of the time without a single ounce of counter play besides ecn jamming to smoke yourself then pray your don't get 1 strafed but let's all be real here the second strafe comes so fast your gonna die anyways. And if you wanna play infantry and they have the best Jett player you just get completely destroyed by helicopters tanks and anything, because everything that moves on your team gets melted by a Jett.
TL:DR don't ever buffs jetts if anything nerf them if you want a larger community long term
Attack helicopters
I think besides the Russian 30mm on pilot they are actually balanced I have been gunned down in squads in transport choppers many times it takes more damage kills me faster and moves as fast as me if not faster. The only balance change I think they need is to possibly make not 100% on this, would be to move a bit faster. Now I wanna be specific here by moving faster I do not mean being able to move faster sideways to do donuts better like old school bad co 2 I mean forward movement to be able to run away or avoid situations. Also they have to be slower and less maneuverable then scouts so a slight increase in forward movement.
Transport helis
Honestly pretty good it takes team work to make this dream work but boy does it work.
Scout helis
Kinda busted the 20mm are a little op and I agree with maybe making the rocket pods more vehicle oriented and moving the power over to the mini guns for a more skill based experience. I think by far this is the strongest air vehicle being so fast It can escape a lot of situations along with the versatility of the rest of the weapons. It's only really weak against AA tanks which makes sense.
Infantry
Assault rifles
I really think if you wanted to have an increase time to kill you should have lowered the damage and kept the accuracy. I also agree with the beta being significantly more satisfying for the gun play. Now ima bring up apex for a second. Personally apex legends is only good because the gun play it feels much more skill based there really isn't a lot of luck involved and if your really good and yoy have moment while hitting your shots it feels fantastic. This game had elements of that in the beta but with the current iteration of assault rifles just feels awkward and a smg is just superior.
Smgs
Should be less effective at range and maybe very slight more effective close for an exchange of power I would be careful about buffing it tho.
Snipers
My hit reg has been fine and it felt really good for the small time ive played on it
Personally haven't played enough infantry to give a fair review on anything else.
Tanks
Although I haven't played in them and I don't know if they are really over powered but shooting them with AT missiles and being a chopper or infantry it just feels like they are a little hard to kill and could take a bit more then 20 damage per rpg. Now I can understand why you wouldn't nerf tanks given the player count increase might make the obsolete but it does feel a bit difficult at times to remove an AA tank or even a regular tank from one of the conquest flags outside deployment.
Net code, stability, performance
I wanna give any developer a shout out as this has been a release that passes with flying colors compared to previous titles. If your track record says anything about the future of this game I have 0 doubt in my mind that within a pretty reasonable amount of time you should have a majority of performance problems and optimization down. Hopefully it's not like mantling in bf3 which took a long time to fix.
I just wanted to take another moment to appreciate just how good of a job the developers have done. Especially given the restrictions with covid etc this has been a fantastic early access. I honestly can't wait for the first couple stability and optimization patches to boost frame rate a bit and this is gonna be one phenomenal game with incredible replay ability. I'm also blown away by just how great the portal gameplay is I really was afraid that it would be done like many other franchises and just slop together an "old school" game for some cash. But it really feels and plays like the old titles respectively. If there is one criticism I can give it, sometimes it can be slightly inconsistent but nothing that completely ruins the game or would consider making me refund. If your thinking about buying battlefield and maybe past titles have let you down, I would give this atleast a 5$ ea pass and take the 10 hour free trial. It's such a fantastic game and again it still has yet to have optimization patches, bug fixes etc. Keep up the good work it's amazing.