Personally, this would be pretty cool. I may be a Halo fanboy, and troll me if you will, it IS a good game, and some of the armor is epic. I enjoy playing the game because of the general look and feel of it. There just isn't much like it that go so far.
And for all of you trolls.. forget off and go play TF2. I know I do. Both games are good. However, neither need to be completely remade and retrofitted to work with Blockland and change the game with a single mod.
The armor would be pretty sweet as an extra armor type. Hell, even some of the TF2 armors aren't bad, and I'd go for them. Just, please... don't go over board with either one, and don't half ass it. Thats what everyone else does, and thats half of the reason that people don't like Halo here, because everyone makes stuffty addons for it.