Went to Akihabara several times during my trip last week, also not missing out the pedestrian paradise on Sunday afternoon.
I actually bought some WIXOSS trading cards in Radiokaikan which makes me realised there are too many card shops in there.
Plenty of Aldnoah.Zero advertisements around Akiba.
Happen to saw some itashas too.
Pretty much about it. More photos will be at Google Plus.