Sorry, but I mistunderstood what you were asking,
At the moment there is no way for MC to rename the folders, it is maybe something I will look at in the future, kind of got my hands full at the moment.
As for the multiple vob nfo error, what build of MC are you using, I was sure I had fixed that issue. vob files located in a folder with "VIDEO_TS.IFO" should be ignored.
It has definately been added to the code, although it may be that I fixed it after the last build.