Yeah, I know that the purple puyo is for five augment affixes, but I remember there was something good for 30 UQs too. I know it because i remember keroppi saying "I know that 30 UQs seems like a lot, but you have until December 22nd(?) to do it which shouldn't be a problem."
I briefly looked through some old videos, but I didn't see what it was. Whatever it was, it was good enough that I remembered that I had to do 30 UQs, 9 of the Limited Time Quests for the Unit and 5 Recommended quests for the Atlas EX Gunblade.
I'll have to keep looking. I HAD to have put myself through that for some good reason!