I don't really want to replace maps for a number of reasons, least of which is that they've gotten a MotM recognition.
Mostly because, unless you can make a good case why maps should be replaced, it seems like redundant work for you and wasted time for me putting them up again. Plus, since graphics aren't usually "ours", if I make a habit of replacing maps, one of these days someone's just going to tweak someone's map or just reposition the screens a little and take credit. How do I know they're not made from scratch?
It's a touchy situation. I have replaced maps before, but those times it was to create a better sense of consistency by replacing some one-time mapper's twenty-minute "project" with a better map by someone who did the rest of the game. It's not something I liked doing, and so I would definitely not want to feel pressured into replacing entire map sets.
Of course, I could have more than one set of maps, but again, why if they're not too different? Especially in the case of ripped maps, which most are. Yet unfortunately I have accepted them in the past already *coughGuardianLegendcough* but that's not a practice that seems worth the space.
I say if we welcome people into the forums and share mapping tips, most maps that get sent in will be the best that they can be the first and only time they're sent in.