We aren't missing any point here.
Think of reviving as a requirement checklist.
Is my knocked team mate in cover?
Is the enemy pushing?
Is my other team mate covering us?
Is it safe to revive?
If I revive will they be safe to heal up?
Lifeline can counter a few of those checks. Lifelines only weakness is the team mate being in cover. If they are behind a wall, she can press one button and start to cover fire the revive AND put a heal drone down to speed up healing.
Newcastle needs to be played more methodically. He can create cover with his ULT and Tactical and his knockdown shield if they aren't in cover. YOU have to make sure the enemies aren't pushing and that your team mate is covering. Then its up to you to defend them while they heal up through shields and cover fire until they are ready to fight.
If you are so concerned about rage quitters leaving on downs then how is a reviving buff going to help? They go down they insta leave. How are you going to revive them then?
This argument has NOTHING to do with a revive and more so about no leaver penalty in normals.
Having a reviving buff will also not fix team mates that don't stick together. If they are going to leave then what can you do? If you go for the revive then you die with them. Or you don't go for the revive and have a chance in winning the fight.
I've had so many different times where I haven't picked someone up and win the fight then come and get them after. I've also been the guy on the floor, sometimes they are better left on the ground. I get that in normal peoples mentality is different and they just want to go to the next game instead of the seeing the outcome but that isn't a reviving issue AT ALL.
A singular free revive IS a Horrific idea. This whole game works on advantages and disadvantages. You get a knock. You push. You are expecting the enemy to be at a disadvantage? Correct?
They are one player down. But you want to give a free revive. Now its equal again and the team mate that went down is back up and ready to fight. Does that seem fair on the people that won the advantage with a knock? No. Not at all. Its not fair. Gold knockdown IS different. Because its rare. Not every support character will have one. Especially a character than can revive easier than others.
Once again Rage quitting team mates is a different issue, a support reviving buff wont fix that AT ALL. completely baseless argument.
It seems you cant grasp the concept of sometimes your team mate is better left downed until the end of the fight. (Please dont say "What if they rage quit) because thats a different issue. Think of it like this:
Team mate gets downed. The enemies are pushing. You go for the revive. You are now Vulnerable and out of the fight until you finish the revive. Now its not 2v3, Its 1v3. Your team mate is now 1v3. They get rolled. now its 2v3 but your team mate is still healing up. Was it worth it? NO.
Or
You can leave your team mate down FOR NOW, and try to stop the enemy push. maybe even down one as they push through open ground. Hard but do able and definitely the better option than being an easy target. Get an advantage through the disadvantage.