Whoa, you made that graphic?!? Awesome! If so I gotta hand it to ya, that's so much better than my little scribbles I call "drawings"!
Well, I believe that part of the criteria for the build is the machine be capable of "mass destruction" so just slap an unguided rocket launcher system on there and you should be set!
I would think a flying platform would be used for close support of infantry during a ground assault. Hmm, Matt I think it would be your call on this one!