Is there any way to have more than 20 stylistic sets?

[FlorianPircher]

Extending the 20 Stylistic sets OpenType limitation

A couple of questions: Is there a more or less easy way to add more than 20 stylistic alternates to a single letter in a way that they would show up in Photoshop/Illustrator’s Alternates for Current Selection list (Glyphs panel). Can I use .altXX suffix and then use a lookup rule or something? If yes, what feature would be the best for the code to appear within? Can I add alternates to .fina and .init glyphs? like .fina02 .init03? Would they appear in the Alternates for Current Selection list? …