Marvel United insert
*Requires cutting of the current insert
The insert as is isn't very good for holding Sleeved cards and all the tokens in an organised way. I just used an x-acto knife to make the cut to the insert and the insert cover.

The cards are sleeved with Paladin Percival Sleeves and with the Marvel United_Fancy_CardsHolder they fit with enough room on each side

I included a Marvel United_Simple_CardsHolder that holds all the cards stacked in 2 rows if that is more your liking

I printed 2 Trays that stack on each other so they don't slide around