Ironically, hard tires (whatever type), will probably induce more need for pitting. Softs (whatever type) just seem to get a
last long plateau that many people can easily drive them a lot longer than should be realistic. It shouldn't be that way, but it is.
That all said, actual wear doesn't seem to vary much between any of the tires, regardless of what type or hard or soft. It's just a difference about how fast they warm up or go past the "ideal" temperature... more than expecting them to "wear out". If that makes any sense? It's 2 different things.
If you want to bring pitting into the equation as a way to liven things up... a better bet is to have damage on heavy. With damage, people can wind up having to pit even if it's only because there was a simple accident, or a minor mistake that caused a collision, or a minor damage to the car that causes them to wear out the tires unevenly, so they're more likely to want to pit just to straighten that out.
This is assuming you're running a clean race of course.

I'd say in a reliably clean (no deliberate collisions) race, damage definitely makes it more interesting, and almost guarantees everyone's going to want to pit at some point.
But of course this is NOT the case if you've got a lot of sloppy drivers or anyone up to no good nonsense, then damage can be a miserable thing.
If you depend on tires alone to put pitting into the equation, you then have to set a minimum mandatory pit... Because I've heard some people will just drive tires forever & try to get away with it. I think some odd people have actually learned to drive on worn out tires for just that purpose.

Seems kooky to me, & I've never seen it myself, but that's what I've heard. That some people will just refuse to pit. haha.