These are actually some really high quality models. I can't wait for the release.
However, I'd personally prefer the Halo Reach design for the Scorpion, but I'm not gonna be an ass and request a change 95% of the way to completion. Though I do suggest getting rid of the weapons appearing on the back. It's awkward looking, and rarely actually works out properly, all things considered. If someone is carrying more then two Halo guns, then it'll just look weird and be a bit of a fuss to use.