Zombicide Invader insert with card holders and stack-able trays

Since I received the kickstarter version of Zombicide Invader I started working on an insert.

I use both the core game + black ops box to store most of the trays. But with all kickstarter content it is not possible to store everything in the 2 boxes.

I use the black ops box to store all the boards, tokens and dice in the lowest level using the 'bottom insert' part.

Then on top the player boards (not all of them fit), the 4 card holders (sleeved). And room for 2 hero trays.

In the ot