Guild EXP Table.

This whole guild thing is CRAZY. I doubt it was meant to be like this forever, because it's not even remotely normal to require so much just to level a guild once. And as others already said, it's not even a matter of effort. It's a matter of time logged in and levelling up, and those don't even give much GP at all!

That said, I'm pretty sure GPQ was meant to come back, and was meant to become the main GP source. But they've probably had other priorities on their list, thus not revamping GPQ yet. If you click on the GPQ's NPC you'll find out that she says that it's going to come back, or better, she says it's gone "for now" or something like that, which should signify that it IS coming back.

I'm pretty sure that, whenever it will (if, hopefully, my theory is true), it WILL be the main GP source and it'll make guild levelling much easier. Or at least better than this madness.

Though, seeing how they made Ergoth an event boss and contextualized its storyline OUTSIDE the Guild PQ itself.. I'm not so sure anymore. I doubt they're going to revamp Sharenian Guild PQ so that it has a different boss, so yeah.. I just hope this doesn't mean we're not going to see GPQ anymore.