I'm not a big G.I. Joe fan. I got the FCBD set mostly for Snake Eyes, because you obviously want to have the most iconic part of the franchise represented.
That said, the series 2 Cobra release is a top tier assortment of minimates. I didn't get series 1. Two figures I already had and two others that didn't excite me. Series 2 is different. The Cobra designs are striking and dynamic, more than the look of the Joes. I felt better getting two figured I already had in this instance because a.) Destro & Baroness were that impressive and b.) the subtle variation of Cobra Commander was interesting - I think I prefer the second version.
I would like to see and hope to see more ARAH minimates. Both to make everyone happy and to hopefully get more fascinating Cobra designs. Hopefully going forward DST will shelve the "retro" packaging gimmick and just give us the minimates. The extra cost is not worth the novelty, in my opinion.
TL;DR ~ I want more international terrorists and less military stooges.