I think that for the art we are using, we should name them whatever way we prefer.
I use wall_, door_, back_, spic_, bpic_, and icon_. Though, I've been thinking about switching to smallpic_ and bigpic_...but I haven't decided yet. If I do, it will be a proactive decision and not retroactive, at least as far as my uploads are concerned. For any default art I do in the future, I will use the official prefixes.
