Mr. Blob: It runs ok despite the intensive detail (doesn't look as "busy" like that from players view).
Seba-079: It's a Gravelpit style CP, cap A,B first, then C. I guess this could be modified to follow that artpass pattern easily but i haven't really thought about it. Originally, there is only gravelpit that has this style and one other custom map that comes to my mind (there propably is another too, i just can't see it right now in my head). Anyway, I picked this gpit style 3CP theme due to lack of maps on that area and it looked a good spot to start mapping for TF2.
Okrag: I'm not quite happy with the shack on B yet, i plan to do something for it.