I didn't like virtually any of the Mako sequences (and by god there were many), I didn't like the reskinned environments in the side missions which all felt far too similar. I didn't like having to customise my weapons with a million different types of ammo or modifications for different enemies, I didn't like that you could modify your armour but you couldn't do anything to improve it aesthetically. I get that a lot of people enjoyed the RPG elements and I get that, but aside from more opportunities to resolve things with diplomacy, most of it didn't add to the experience in a positive manner, for me. Agreed, I enjoy ME1 but it's the weakest of the trilogy in my view.
