Thanks a lot. Showing our the terrain was indeed the aim of the pics, but then the fight started and...
Abut the ruleset we just tried out anything non specific, going thru Chain Reaction, to the Ganesha stuff, Crossfire and so on. At the end we ended up writing our own system that looks a bit like the Gurps of 3d wargameing. So every mini has stats and perks and let's go.
I think this has become a major need in wargameing: we have a lot of miniatures, we want to use them all with no rules change. See what's done Matakishi with his extensive use of Crossfire!