I doubt you would see any performance improvement from those.
I just finished the 600RR coil on plug mod, which I feel to be a good mod.
The 600RR sticks won't increase power or anything but it will clean some wires up in the bike, eliminate the large coils, and remove a point of failure from the system (the wires going from the coil to the plug).
The CDI system can create a stronger spark compared to TCI ("typical" ignition system) anyway by discharging a high voltage capacitor (~300V) into the coil. This creates an extremely fast rise time on the primary winding of the coil. I wouldn't be surprised if the stock coils are producing 40kV due to the CDI.