As well as I can guess, Repels are the major problem when it comes to things like increasing gun time, rushing problems, and things of that nature. Perhaps if this was due to bursts being too weak, the solution could be to buff bursts? This is probably one of the few possible changes left that may have not been very much attempted (since I last played at least)... See, I think that repels easily stop bursts, but are also slowed down by them while being a rusher, even possibly to the point of being countered by them outright. If we do not find a good counter to repels it may be difficult to understand how we could buff them, and/or bring back stronger bomblines, tankier gunlines, and other things that make the game take more skill to win? As I believe right now, it is better if pros have a advantage, as that would indicate a more skillful zone. Of course, this would be best in a way that isn't too lopsided, but is more like a reward for being good, or something like that.