This has long been a headache. I think they actually did increase it by a few seconds BUT it's still not long enough. You're SOL if you're too deep in the enemy territory. I understand the need to protect spawns from campers and random wanderers AND I'M GLAD THEY DO but it's absurd to set such an impossible time limit to exit any given area.
I hate to say this but I like the way it was done in BF:BC2 where you were actually given a timer on your HUD and you're screen would desaturate (much like suppression in RO2) whenever you wandered out of the playable areas, and I believe it started at about 10 seconds, which is plenty of time to get out and plenty of clear warning about what's going on.
I'm not saying RO2 needs to do what BC2 did, I'm just saying that's one example of it being done right versus one example of it being done wrong. RO2 could easily have a similar system that's just as, if not more, effective but for whatever reason oh, no, sorry, you just exploded.
As big as the maps in RO2 can be and as quickly as things can change it's just frustrating how somebody who is actually trying to defend a zone (while his teammates obviously are not) can be penalized so unnecessarily.