Multi class is hugely more fun, totally disagree to remove it.
The more I play the less I see that some skills are OP tools. Lets take Rage Burst, it’s still a full clip use, frankly in first parts where it’s the hottest I have most often better thing to do than kill a Scylla or a Siren. For example with a Sniper destroy 2 AR of crabs. Later I already use some ammo and next Rage Burst is quite less powerful.
This let the question on full team RB. I think I have RB with almost all other classes, and didn’t saw anything making combats trivial. The weakness of RB is it’s one target, full clip spend, WP cost. Even WP cost isn’t insignificant, more than once when later in a combat I wanted use a RB, oops nope, need restore Will first so next turn at best. RB involve also other problems, know well target moves during a RP, some RB will hit 50% because of target move during the RB, not because you could miss when you started the RB. More.
So, for me RB is a tool among other, and I have about 20 skills I consider as powerful starting with Dash. It is just one of the best tools. I tried only once a full party RB but it was no way the most efficient party I played. I admit I need try more a full party RB.
This let just Citadels making look RB op because unlike other missions kill first the Scylla is the goal and end the mission. But that’s a problem with Citadels not with RB.
RB also makes capture much more simple once you have the pistol or the rifle, but frankly I don’t want bother with capture without that.
All of that to say that it’s more complex than it could seem, RB won’t help you manage better an army of crabs or Triton, which is the main threat in most missions.