The glaringly obvious issue that will end battle-royale so no one can play it.
There's a huge issue affecting solo-players of redsec that needs addressing if battle royale is going to have a future and that is the lack of consequence for leaving mid-match. It often happens. That you get "teammate" after "teammate" jumping in, dying in the first 1-2 minutes, then quitting the game just to rejoin the queue because it is quicker than waiting for a redeploy or even a lot of the time, Just the standard second chance. It leaves us solo-players 1v2 against every other squad and If you get 2-3 of these out of 5, it completely ruins the experience and makes you want to stop playing the game.
Honestly it IS going to be one of the main issue's that make people stop joining solo. The only problem is just that if solo-players stop joining, filling 80-100 players a map is going to make queue times ridiculously long and then no-one is going to be playing very much if at all.
I am not saying that people who leave should be hit with the hammer of ban or anything like that, but please make something like a quarantine from joining other redsec/battle-royale games for x minutes. if you leave an unfinished game in order to dissuade this behavior - and yes, I can already hear someone bringing the argument of "what if your teammate doesn't revive you". That's fine, you could likewise institute a "if you've been dead for x minutes, you can leave without suffering the quarantine" to avoid the other side of the problem.
Honestly you're already handicapped enough as a solo player without also playing 1v2 in half your games...