Hmmm main bugs with it were that guild deps weren't saving properly (super easy fix, just had to have the database updated with the right value), aoe magic attacks were calculated using physical damage (just need to correct the area attack function to let you specify the attack type) and some other minor bugs like being able to hit the pole in gw even if your guild had it if you used aoe/indirect attacks like fastblade.
The slightly more major bugs were mostly just unfinished features or the lack of a proper conquer 1.0 item type (such as reborning fucking over your items)