I see where grazr is coming from and I see what Wilson is saying...
I think the issue arises because we don't have a really solid set of guidelines of what maps can be considered "featurable," we're just going off of what we want to show off as one of the best (maybe the best) mapping TF2 communities... So i'm not sure were that leaves us with the gatehouse feature. Personally, I think it'd be okay to post, even though its a non-generic gameplay mode, it is still detailed quite well. And, if I remember correctly, medieval mode version was loads of fun.
We don't have to be Serious mappers all the time, whenever a really done "non-stock gametype" map comes out (I avoid using the word fun because that brings on connotations of surf maps and other poorly done maps), we can still play it and have fun.