I hate the name Finlay's. So random. I'd make it a snack location that can serve "unique" treats, not just generic theme park snacks. Or I'd make it a Mel's Diner Express. Paint it in a retro red and chrome color scheme, and serve some quick snacks like fries and chicken tenders and other fried snacks or...idk. Just something with a better theme and purpose than Finlay's....
Something very "Hollywood" or "Golden Age of Hollywood" or something "cinematic" themed would be cool, since it's close to Universal Plaza.
Or better yet, theme it something British! (No, not Potter). Since it's literally right next to the British themed street, they should theme it to something British and quick. Mr. Bean's Twisted Treats? Idk