I've already built a dreadnought and drop pod from it. I'll also bring my other tac squads up to 10 men each and have a melta squad too.
At first i couldn't decide on a front for it. None of them looked very Iron Handsy. So i decided to not have one. Having a torso wired into a walking tank looks much more like something the Hands would do. I have built all the arms so they can be swapped out but i think plasma will be the one i use most.