This is actually 2 requests:
1. Please allow Buff Towers to buff x + n% after a certain level. ie, hp... adding 500 hp is not going to help someone after lvl 10 or so. If you want guilds to continue to burn resources upgrading towers, make them percentages and I can guarantee you every guild will max out their towers. ie, 6k hp for lvl 10 hp tower... it could be 500, 750, 1000, 1k + 1%, 1k + 2%, ...
2. Please allow Buff Towers to be managed by people with privileges and not solely the GL. People have permissions to sign the guild up for siege, but can't turn on/turn off buff towers?