very informative thread - cheers to everyone
I'm going to try out a lot of these things.
My set up is like this:
M1: Bola (Volatile explosives)
M2: Rapid fire (fire support)
Grenade: (Tinker)
Vault: (Tumble)
Sentry: (spit fire / swap with Bat now and then)
Caltrops (jagged spikes / swap for spike trap now and then)
I like making things go BOOM
But I will be checking out this Smoke screen + Preparation combo - sounds good.