Yeah this looks like a map where you have been learning the very basics of radiant. I'd say keep working and aiming to better yourself and your mapping skills.
Try making a smaller map this time with more detail and complexity.
Server admins, do not put this on a server under any circumstances. It is far from being a playable map. Its also HUGE and WIDE OPEN which I am sure makes it very tempting.
I share the thoughts, its not really a good idea to release the experiment maps while you are learning netradiant/gtkradiant, because the early maps often have serious quality issues. Anyway, keep up with the learning, i'm sure soon you will release some real fun maps