Additional avionics options that are switchable via a tablet or similar interface representing H-model avionics upgrades, through at least the H3.
Adding to this, perhaps you can incorporate a mount (and selectable option) for the freeware and open-source KLN90 GPS simulation. Reference: https://msfsaddons.com/2023/05/29/the-return-of-a-classic-bendix-king-kln90b-gps-now-available-for-msfs-aircraft-developers/


Repaint kit and support for end-user created liveries that may be uploaded to external websites. Or...as a compromise, repaint kit with instructions for end-users to upload to CS directly for review and incorporation into free or cheap livery packs.