Halo 2 > Halo 3 > Halo 3 ODST > Halo Reach > Halo CE
Based on campaigns.
Hmm, I would have thought that ignorant -blam!- Sepratist Unggoy would have replied to this
Yes, I would LOVE a remake, but I don't want many of the cool aesthetics being ruined by models from Halo Reach. I say keep the same models as before but just revamp them with new graphics. In other words, Reach graphics engine but not Reach character models.
If they do muck it up somehow, there will always be the option to switch back to original I suppose