I don't think it is wrong to ask for a motivation.
I for myself would not make maps for anything but my own project though, since I got very little spare time and am simply busy enough...
But if I had too much time on my hands, I guess it would be fine to be mentioned somewhere. I always liked things like npcs ingame with the modders name (if apropriate for the realm style). I understand that r0xx0rkillOr does not fit an rpg realm for example.
Or maybe a subzone name or item/object/village whatever ingame, which is not really that important.
Like "Amy's Gnarled Staff" with a gold text: "This staff saved hundrends of lifes" or "Jyllians Chained Kilt" "It looks very old and yet is free of rust".
Something like that is nice, adds some kind of background story to the game and makes people actually wonder who these persons where and why they are being mentioned. Like Forors Compendium of Dragonslaying.
