The server filter has an option called "BattleEye Required" which seems useless. Also version seems a bit pointless since the game knows what version you are on and could/should automatically determine that.
Furthermore, would be nice if we could filter on things like:
- Hive type (private / public / any )
- Amount of slots (30 / 40 / 50 / any )
- Mode (first person / third person / any )
- Time (daytime / nighttime / any )
Example: http://i.imgur.com/onCr38f.png {F31294}