My original impression of the guild leve system was...

You picked up a leve, and went to a crystal/aetheryte and you were teleported to the some sort of zone that was filled with different challenges based on the leve you picked. It would scale with party members for difficulty, and was a unique zone you only accessed through leves.

There's a lot of potential they can do with the leve system, and I hope they'll re-evaluate it. I was thinking these zones you were teleported to might be similar to say... an Einherjar chamber, a shorter version of dynamis, etc and you could build "leve credits" to access the harder fights that may drop better rewards. (or factions). They could even have some leves being the same as they are now, but not all of them... This would be fun events / fun leveling up for everyone if they could utilize this system better.