Guilds are already great in PL, but one thing they must add is an option to give their guild a picture to represent them. Like a guild logo or something. How it would work:
The guild leader would import a picture off their phone and use it as a guild logo. whenever a person checks out a guild, that picture would show on the side of the screen.

Another idea is to add guild news. Like to show what's going on in the guild. It's kinda like a guild forum where the guild leader and guild officers can Post what their guild is about, the guild rules, etc.