I use Mapview almost every day
Especially when I want to find out something about the MCD of a specific object. Or the routes/spawn points is also great for debugging alien movement.
Because I'm using the MCD window alot, one feature request may be to have a slightly more user friendly MCD window - it's also different to the other windows as it seems to disappear often and I have to find it back again
And something that would be totally awesome is that you can edit and save the MCD data, not sure how hard that is.
I would say I'd program it myself, but I'm kinda busy with openxcom right now
Don't want to push you or anything, but I read you need active users, I'm certainly one of them.