Body roll is the same as now, but only in reverse. Why does not currently wreck in turns?
Roll is 4 .... 5 degrees. Why would wreck the aerodynamics very quickly?
I doubt very much they roll that far - I've been watching the front wheel movement when cornering and I estimate the outside wheel moves in bump a maximum of about 15mm. If we assume the inside wheel only droops maybe 10mm (probably far less than that in reality) then over the width of the car that's about 1°.
If you could perhaps modify your system to give no more than that roll-into the corners then you may be onto something. If you could arrange it so that the car sits dead-flat with lateral load it would allow for either a lower ride height (better aerodynamics) or softer spring rates. both of which carry benefits.