These are difficult times for the Shootmania team, and I hope for everyone involved to get through unblemished.
In the end it's your choice, going beta2 or beta3. I personally can't suggest one of those paths, because I like both.
Maybe the gameplay chances for Elite should really go into a new seperate mode, never tried the others, just played some Royal. On the other hand the 'old' Elite got quite repetitive, even after playing it for just 2 weeks. Whenever I played with people ranked less than 1000, it was a total campfest, and not really enjoyable. I like Shootmania because it emphasizes aggressive attacking skills as well as sneaky ninja surprise tactics.
Now what you definitely have to do, is reduce the splash radius of the Nucleus by at least 35%. The reload will make much more sense, in contrast to the Rockets (which are even better now).
I still don't know about Rail, mostly it's the wallhack icon on top of the defenders that kind of annoys me when i think about it, but ingame its fine. Maybe ditch it altogether, because we got those platforms anyway. Maybe give Shaft to Defense.
And if you are playing around anyway: Why don't have maximum 1 Rail and 1 Nucleus for the defending team, but let the attacker carry all 3 weapons, and he can switch between them? You could ditch the wallhack icon, cause he will be MONSTAH
Anyway, don't listen to old quakers like me, they don't know anything...
PS.: All Power To The Movement! (literaly)