I do like Mini PCs, but I kind of wish there was an easy way to get a solid GPU into it. There's those weird docks but they're far from standard, and it would be nice if the GPU had a similar form factor, so you could just stack them up like a MiniPC on top of it like an old hi-fi separates system.
Slap a storage box on it as well for some HDDs, baby you got a server going.