I was mostly trying to suggest since others have suggested moving into a points system direction for towering that there should or could be more categories so there are more opportunities for more guilds to get prizes. I'm still afraid if it was set up just based on who gets the most tower hours it is going to be the same 3 guilds winning every cycle. That's why I think there needs to be more to it then just tower hours.
I also had an idea where guilds would be based around using and getting rewarded with gralats. For instance guild members would be allowed to donate to the guilds fund and for doing so after so much you would get a reward. Then they could charge fee's to own and maintain guilds,to have allies,to rec or kick ppl as well. Going with that a reward's tier could be a list of items you can unlock for purchase when your guild hits so many hours.
I'm sure it will be difficult to change towering and keep it balanced because of guilds that have a crap ton of hours and that are still active like SON or one of the others that keep going. I'm not trying to make it pay to win or anything like that just trying to think outside of the box and suggest some new elements that might work.