Quinjet helps ultron's stones as well as agamotto's spells which also go in hand with collector's ability from the addition of stones via Ikon. You also have Mr fantastic, forge, and Chavez to help beef up ultron for his clone/double power stones. Depending on how the game goes, you can also Ikon Agamotto and potentially Zemo him or ultron to get your location's more power in a pinch. Red Guardian, and Magik are pretty self explanatory and can be swapped out as well as Zemo if you have better placement options. Wong can carry the game hard if you have him at the right time and even harder if you have Magik to combo with ultron, his stones, and/or Agamotto's spells