trebuchet has some errors left, will be fixed soon dont worry.
wakelocks can have a couple of reasons, maybe an app is causing this. use cpuspy and better battery stats to see whats the culprit. as a rom user i know the issue though, currently on mine i dont experience it but the advice to look out for another kernel seems good to me.
the droids in my background are not changed in photoshop or whatever. its just androidify. i made myself a couple of bearded ones to have something black behind the dock, looks cool to me. it goes automatically into that zoomed mode, maybe play around with the size or something. also definitively you wanna switch off move wallpaper in trebuchets settings, that wallpaper will lag.