The reason some hosts want custom skins out is that, unlike Il-2, where all skins had to be 1MB, CLOD doesn't have a limit for skin size. Nothing can stop someone from using a 20MB .BMP skin. I look from time to time at the skins in the Cache folder that were downloaded by the game automatically while playing online and some of them are huge.
I love using personal skins and I think they should put a maximum limit for skins you can use online and be done with it.
Is there a way for servers to enforce a skin size limit? It could be a good workaround.