Don't compare halo to Cod. Halo is it's own thing. Second, if you want loadouts and sprint and all that, just go play CoD or BF. let's try to keep the same feel of halo 1,2,3 but also make some changes. If 343i could pull that off, I would love them even more than I do now
P.S.
Reach took ace BEFORE halo 1,2,3, so your comparison to them adding the hornet and such, is flawed.