Add new mega event mounts that you can only buy if you have caught the respective event form yourself.
Example:
If you have caught halloween charmander (or now evolved ofc), you can go to the npc that upgrades your normal halloween charizard mount to mega halloween char x or y.
Pros:
- Would make OT feel more special (maybe there are more/other ways to make OT pokes feel more special in the future?)
- People might hunt a specific form just for the mount
- Cool new "rare" mounts that not everyone has
Cons:
- People who sold their forms can't get it anymore (maybe its possible to check who caught event forms before?)
What you need to obtain one:
- have the OT event form poke in your party when going to the npc (or check if the player ever owned one like mentioned above)
- Mega stone for the poke
- Own the "normal" event mount (if not available yet, we need them to be added in the game too obviously)
- 400k to upgrade