Tower guilds: are unable to inflate the worth of their guild by temporarily recruiting anyone who is online and kicking them when they're offline, which makes guilds as a whole nothing more than a boring rostering contest
PK guilds: are unable to inflate the worth of their guild by temporarily recruiting anyone who is online and kicking them when they're offline, which makes guilds as a whole nothing more than a boring rostering contest
GS guilds: are unable to inflate the worth of their guild by temporarily recruiting anyone who is online and kicking them when they're offline, which makes guilds as a whole nothing more than a boring rostering contest
Spar guilds: are unable to inflate the worth of their guild by temporarily recruiting anyone who is online and kicking them when they're offline, which makes guilds as a whole nothing more than a boring rostering contest
Do you see it now? You also should try and wrap your brain around the idea that not every guild will have some static functionality of being a _____ guild. Guilds will not have to specialize in one thing. You can recruit some hodgepodge of sparrers, PKers, and towerers and do everything, like a guild should be able to.
Maybe when you've got 15 people online, you'll decide to go and take a tower as a guild. When you've got less, maybe you can group up and PK together somewhere. If you're alone, you can singles spar and earn points to help your guild. You're criticizing something while not even thinking about it outside of the box that it's currently in.