Although I do not have any of the KR foam, I see the "wasted space" as where I would put a small bags with the all of the standards tokens needed to fly that craft, and it's maneuvar dial. I prefer to have each stored vessel be as "complete" as it can be. Having it assembled and all of the relevant tokens separated saves time setting up. And likewise not having to sift through tokens of other craft I am not using.
Had KR marketed their tray that way, showing vessel and tokens neatly stored together and ready, their product would have been better received.
I bring that up because, other than the Battlefoam foam for the core set, there is very little room to store the tokens.
I would like to see a "package" that has foam for the vessels and a thought-out tray for token organization, that neatly scales based on Core-Set (all cards, move templates, range rulers - with room for the future) and then by wave (#1, #2, #3)
RogueMorgan