What you written here is very subjective, with unsubstantiated, broad criticisms. If you want people to take you seriously, you need to explain how H2 looks worse than H1, etc. Certainly coments like "The guns model are nice (though barely better than Halo 3)" sound quite negative and yet could be exceptionally positive. If I think H3 guns are the best models in the woeld (and what exactly is the criteria for good looking guns? I'd have thought that'd be mostly a matter of personal preference) then I woudn't expect Reach to surpass them. I wouldn't expect them to tamper with the designs either.
We'd much prefer an objective criticism or where the current build is lacking.