Hey guys. I am currently finishing up work on the 200 series drawer systems. I'm going to take a look at this issue and see if I can come up with a solution for you guys.
If you're the one who sticks with this and pulls it off, you'll have a lot of fans on MUD with '16-'17 200s, as well as pocketfuls of cash.!
If you do work on this, I have one easy request.....make the covers thin enough that I can still use the Toyota brand tablet mounts on the front headrests. They are easily removable and hold any size tablet. When my son borrows the truck for vacations with his family, the kids use these for entertainment with their iPads. The mounts are FAR more versatile and useful than the silly old-school monitors Toyota bolted on there.
https://www.amazon.com/Genuine-Toyota-Universal-Tablet-PT949-47160-02/dp/B01CTG4DI2