Everyone likes nubbins. The more the better. Bill Bollinger of B&D Ski Gear even made some for Dynafit Radical series bindings. Radical nubbins.
B&D heel lift extender for Dynafit Radical is machined out of aluminum, attached with set screw. Only downside of lift extenders is they increase leverage and subsequent force on the binding heel. Thus, I've always felt this sort of thing is best for average to lighter weight skiers. Possible wear is easy to fix, however, as it would usually be a simple matter of replacing the binding's thimble bushing.
Dynafit Radical aftermarket heel risers. Weight is 6 grams each, additional rise = about 4 mm depending on how your boot sits, additional 'length' of heel riser is 7 mm, due to angle, rise is less than added length.
Heel lift extender for Dynafit Radical backcountry skiing bindings. For much North American backcountry skiing, I love these. Not needed in Europe, where skin tracks tend to be lower angled.
I’d imagine Bollinger’s willingness to make these will be based on demand. Recommended if you’re trapped on the testosterone skin tracks of North America.