This all got me thinking about the use of these louvres and perhaps the ability to blow this area in a passive F duct style like has been discussed with the W Duct.
A crude picture below (used one of Scarb's diagrams and altered it)
Using the airbox (The same way the F Duct was used) directing flow into the beam wing and outwards to the endplates creating blown louvres.
Personally I have no idea the effect these blown louvres would have as I'm far from understanding everything Aero but perhaps you guys could help? Used in combination with the air flow channels I've mentioned already or even on a standard wing setup like McLaren use. More DF and better drag reduction via DRS could be achievable?