The governor did not seem too happy that Merle wanted to head out to search for Daryl. I can see some shit going down between them if Rick's crew shows up. Something like...Rick and company shows up, shit gets real, Governor, Rick, and Daryl in some sort of a standoff/showdown with guns/crossbows pointed at each other, Merle has to choose to show his loyalty to the Governor or to save his brother and, ultimately, the man who abandoned him, forcing him to cut off his hand. I haven't read the comics and could be so far off it's ridiculous, but I think it would be interesting to see something like that go down. Alternatively, a Merle vs Daryl showdown where Daryl ends up killing Merle for threatening Rick.
Oh, and I still think there's something up with the tea that crazy scientist makes.