Re: systemd? Do not want.
Systemd doesn't bother me too much, though I dislike the concept. It's Unity itself which gets up my nose; it's no doubt all very wonderful but it's not a patch on, for example, Cinnamon - or even Mate, though I note that's now an option.
The Amazon connection doesn't strike me as The Way Things Should Be[tm] and seeing adverts for paid software in the software centre was something of a surprise, too...
That said, if the guys from Crouton could see their way to getting an installation for Ubuntu Mate onto a chromebook, I'd give that a go. (Trying to get Mate onto a 12.04 Crouton installation is tricky; I can't see how to start the damn thing!)