Why would you want it to be softer??? Its a type r. It needs the hard suspension so you can go round corners like its on rails. Thats what a type r is all about. Not out right speed but the handling!!!
I remember seeing this thread a while ago about Koni FSD shock absorbers. Koni claim they give the best of both worlds in terms of handling and comfort. Unfortunately they still don't do them for the FN2.
You really don't need it any softer. You need to get the spring rates changed on this car!
You can get adjustable damping with kits like the HKS setup but for me it was the cost.
I fitted the Eiback pro kit and it transformed the ride. Kept it firm but stopped it bouncing all over the place on bumpy roads.
Honda do a type R with softer suspension, they call it the type S.
Seriously as the cost of a type S is less than a type R then the cost to change may be less than adjusting the suspension and then paying higher insuarance for having a non standard car and weakening the trade in value.