[Enchilada645]

I feel like it depends on the franchise. Ultra works because of the similar design aesthetic to every Ultra. Whereas with Rider I feel like you have to get really creative with how the fusions go.

I feel like we'll get there eventually given the Legend Rider forms for Gotchard.

That said as someone who's done fusion form stuff before with Kamen Rider Fics (Mainly my Smash Bros. one, Kamen Rider Smash), it can be an interesting and fulfilling experience trying to figure out what works for a fusion, what aesthetic to go for, what types of fusion to utilize. It's like an interesting puzzle.