So, velusion, if you find several you want to run by me, try uploading them as a lower-quality jpeg first. That way, you won't spend all day uploading a rmg only to find out I'm not interested. Once we both think a particular map has potential, then we can go to less compressed, lossless formats, and tweak from there.
Sylvania are good fun. However, they may be a little overpowered - it might be worth asking Sombre if he has any opinions on this, and if he has time to tone them down slightly (I'm just about to go on holiday so can't really help).