Taking away wild mob spawns has just made the wild too easy. I think it's likely that new players wondering by the server will find it less attractive now. It's like you've taken the "wild" and neutered it, and made it completely harmless. (no pvp, no mobs)
Not sure if this was covered or not but would it be possible to have hostile mob spawners that we have located placed in our towns? I understand the need to improve performance, but recently it seems like we are losing a lot of what makes minecraft well.... Minecraft. No weather and now no mobs in wild? Whats next? As far a performance goes there are more than enough tools and option if people are willing to take time to look. I have a desktop from 1999 that has no issues running minecraft very well with optifine. Please dont tell me the time i spent searching or the thousands of dollars i spent collecting mob spawners will go to waste. Thanks Ajp79