Second question: I know there's a way to override ...

# general-advice

[Caleb B]

Second question: I know there's a way to override the assignment operator (=) with kotlin-assignment-plugin, but is there a way to do the same for is?

I love making DSLs. It's so much fun to screw with the language to make code more readable.

[CLOVIS]

There's not, and it would be a very bad idea. DSLs are only readable because the rules for each operator are clear and you can easily encover what everything actually does*