Understanding it's still a whacky thought for potentially great innovation (weight aside), the process of implementing it is invaluable. It's probably best done in the offseason though so your competitions have less chance for failure.
Another idea to link a 'turbo boost' to an existing drive train would be feasible if the drive train implemented a car-style setup with a differential that is driven by a hybrid planetary gearbox. By 'hybrid' I mean that there is 1 output and 2 inputs to the planetary gearbox, much like
what is seen in hybrid cars.
This would eliminate the need for a shifting transmission since the 'turbo' gives the extra power. It may also free up CIMs for use in other systems because an alternative power source is available for the drive train. Depending on the team, that may be worth it even during competition season.