Do you ever get an idea for a good ability in Pokemon?

That isn't a fix to Sp Attack being different. It will just have similar issues to the ATK side

Intimidate is very controversial. Some say it is too powerful and then there's the people who want all abilities to be that strong or stronger(which I think is too much power creep).

It's why many people still want Greninja Ash in every game even though it trivializes the game