That whole thing is so pointless. I mean, the leaders of the AA strike force are all friends more or less, and right now they should be pressured for beating Dullindal and his mega evil plans of destiny (get the pun?) down. And what do they do during this crucial moment? PROMOTE KIRA!

This proves once and for all that the Archangel crew (and the ORB forces in general) are all morons.

Oh and to answer your question, I doubt Kira will do anything of real importance outside his MS.