I don't know if anyone has mentioned it or not, but there was one major change added in 5.3 that seriously needs to be implemented in GB2 - the changes made to herbing/mining.
Prior to 5.3 you had to have 500 herbing/mining to be able to harvest nodes in Pandaria. In 5.3 they changed that to where Ghost Iron and Green Tea Leaf nodes can be harvested at skill lvl 1 and you can earn points in that skill. If these changes were implemented into GB2 it would certainly speed up the process of getting a new farming bot up and running. My realm is high pop so I have an acct banned on average once a month for botting. No big deal, I make more than enough back in the 30 days or so that the acct is active, and I've gotten the routine of getting a bot acct to 90 down to a pretty good science and back to farming in 6-8 days. Currently though, one of those days is dedicated to leveling herbing and mining up to 500 so while the bot is going through quests in Pandaria it is able to harvest nodes. If GB2 changes were implemented so that the bot would harvest nodes in Pandaria at skill level 1, this would certainly cut down my time frame and boost my profit margin