I love my guild but is it time to move on?

General Carbanti probably is not worth leaving your guild. I've got him at 7*, don't use him. On the other hand, joining a HAAT guild will pair you up with other players more likely to inspire you, which will allow you progress further in the game.

And with this new game mode coming online, a stronger guild is likely your only option to participate in it. If your current guild cannot do HAAT, it is highly unlikely that they can do the upcoming Territory Battles.