I started on this before that whole Spider-Man biz happened, so please forgive his absence in the design! However this is more less symbolic of the current team from the first film and the upcoming Age Of Ultron.
The bright blue and red was used for an older comic book vibe. All 6 heroes are covered in the shoulder patch, which is also a nod to S.H.I.E.L.D. and/or Nick Fury. No references to Quicksilver or Scarlet Witch yet, my bad.
Before you ask…I don’t know. Maybe. We’ll see. Probably not. Hard to say right now.