[@NekoMizu]
The customization is totally coming back to Sun/Moon, they put out a trailer for it just a couple weeks ago. Apparently it's a lot more indepth than they've done before, which is totally awesome. I haven't owned a hand held console since the GBA, but I would love to give them a shot. I've been considering a 3DS as a birthday gift to myself coming up in a couple months, so I'll definitely be giving X/Y/Sun/Moon a shot then.