I just hope there's some variety past this (I haven't read anything yet, didn't even know there was going to be fully-featured MP in ME3):
Kill X dudes
Kill X dudes and stand here
Kill X dudes and diffuse/arm/go to 4 of these
Kill X dudes and 4 of them are special targets (why are they special?)
Kill X dudes and Y big dudes
Because, for someone like me, that's bound to get really, really boring really, really fast.
The enemy variety is nice, I'll admit. The shield dudes, snipers, combat engineers, and ninjas are neat. Even still, that novelty is bound to wear off quickly. I'm worried it'll just devolve into a MP wherein you simply level your characters, unlock everything, and then never touch it again.