> it doesn't do ePub

I was able to easily jailbreak mine and it does ePub fine after that. I don't think a home-made device offers me any more freedom than a jailbroken kindle; I can drop to a shell and do all the same things. That said, while I enjoy tinkering, basically the only non-stock things I do are read ePubs and play zork. I'd prefer to save my tinkering for a desktop or laptop and keep a device just for reading books.