Yeah, weirdly enough playing the demo made me even more excited for it on PC. With higher FoV and mouse control, Mimics will presumably be much more appropriate to deal with. The in-game interfaces should also work perfectly, hacking would feel better, looting and messing around with physics objects as well.
I do think they are in a predicament with the Mimic design in the demo specifically; they are purposefully wild and hard to hit with the just wrench so you are tempted to use better weapons and powers on them, or the GLOO -> Wrench combo at the least (which again, would work better on PC). But in the first hour of the game you get limited tools and no alien powers and very little ammo, so players tend to stick with just the wrench. edit: Also the slowdown power helps a lot with them as well, you get enough points to use it in the demo.
I'm really crossing my fingers that they pull it out this time on PC. I'll be fine with a hardware intensive game with some frame drops when it gets chaotic, what I won't be fine with is a game where dropping settings and resolution does little or nothing to remedy that, and the framepacing always feels off ala Dishonored 2.