Great!! now they have to balance NW...just great!
What I hear most of in this thread it seems is people who's guilds already have towers and are getting tired of defending them. So, stop defending them, if you dont have the time to defend them, and are bored with them...let them go. No where was it stated that having NW gave you the right to a tower, or that once you had one it should be easy to hang on to. If there are a lot of other things in the game that you would rather be doing, then do them.
There are many guilds in this game that do not yet have towers, and they deserve a fair shake at getting them, to change the rules now to suit the guilds that have towers already and just dont want to defend them is wrong. These are not supposed to be things you put up and and reap the benefits from for the rest of your game playing time, they do and should continue to take a great deal of effort to maintain.
If your guild decides to be in the land control business then I agree that you should be able to set it up so that the attack window is always during your guilds peek hours. So, once a day at the same time makes perfect sense to me. Otherwise dont try to control land if you dont feel like watching it.
PS. on a side note about being PvP enabled, do you think you could expand this feature to include people who attack their own guards/faction? And make them 100% enabled for ALL factions as soon as they attack, so I can drop those (insert faction here) losers who attack there own kind in fun. Some of us still try to do some RP in this game believe it or not, and that is the most annoying thing to see.