[Fizban]

I don't believe a MUD can be too big. It can have low quality areas which removing would create a smaller more consistent MUD, but in that scenario the problem is not that the MUD was too large to begin with so much as that it had less than satisfactory areas on it. As long as every area on the MUD is consistently well made I feel the sky is the limit and that bigger is better in absolutely every possible manner. On the other hand a MUD can be too small. When MUDs are too small players quickly do everything there is to do, get bored, and move on to another MUD.