That's empowering towering a lot... Assuming guilds are getting points for towering and PKs, that basically makes it so that every single guild in the game should want to tower instead of anything else, because you're (1) getting guild points for holding a tower, (2) getting guild points for PKing, and (3) getting individual seasonal rewards for the PKs you've earned while doing that

So, to me, if they did that it's kind of like saying "every guild in the game should be a tower guild and nothing else" in terms of efficiency/rewards