Just a small to give more interest to Town Control :
At the end of the 25 min timer, the team controling the town should have 2 dialogues options at the mayor :
- Leave the town unsecure so the faction can kill who they want and earn the reward every 30 minutes.
or
- Secure the town for 1 hour : during 1 hour, combat mode is desactivated into the town so every player can come and do some shopping, discussing, etc. At the end of the hour the faction automaticaly lose the control of the town and every player and mercenary is kicked on the worldmap over the town (to avoid people to bring tons of mercenaries during the hour, waiting for the fight)
I guess you will find some arguments to counter the idea but I think that Anti-PK factions should have some feature to help them doing their job (but giving more interesting rewards for raiders teams)