Originally Posted by jonathancrane
And besides, the villain is going to be Thanos: Starlin confirmed that he reached a financial agreement with Marvel to license Thanos for GOTG and TA2. Considering he nearly filed a lawsuit against them for using Thanos in TA2, it seems very unlikely that they will renege on the agreement; or, if they did, that Starlin would keep quiet about it, considering he went public with his frustration with Thanos' usage in the first place.
a) Whedon already said Thanos won't be in Avengers 2 and hinted that he'd be the villain for 3
b) Starlin himself said that his comment about Thanos being used in GotG/Avengers 2 shouldn't be taken literally because he isn't privy to creative decisions.