Love the suppression. It is awesome in Dust. I thought I heard someone say one of the actions you may perform is to hold off or be "ready". I hope so, Dust warfare has the best rule set for a miniatures game. There already are a lot of similar mechanics to it in SWL.
Is there also a reaction or overwatch mechanic
If you only use one of your actions and don't attack, your other action can be overwatch (I think the correct term is standby, but I haven't looked at a rule book in a few weeks). After an enemy unit performs their first action, you can perform an attack or move action.
Any ideas on this topic?