For alerts a sharable template is doable. So maybe a bad example, LOL.

But for buttons & heros not so much. I've worked with apps that have a "button" template. I find it overkill.

For one project we have some components rendered both server-side & with Vue.

Other cases I've had are sharing styles across multiple apps and pulling in markup from a 3rd party, like Stripe or a WYSIWYG.

But you're right. Ideally this wouldn't be an issue w/ view templates.

I agree; for smaller components like labels and buttons, having some compound rules would help. They tend to be well-defined. I believe you can create composite styles in Tailwind.