There is not much tactics involved, it's just which tanks have all the weapons needed, both arc armors and can swap with their stacked procs, fast. The rest is luck.

Bombs should just be removed completely from events and non chancel zones.

Judging by how every tom dick and harry warrior can get a million points - Mages and Rogues in solo should have more armor/dmg output closer to warriors (in solo), or enemies need to be scaled down in this type of event zone for Rog and Mage.