Anymore, it's hard to imagine a first time visit to HS. What one does there really varies by the guest, possibly ages of guest, if they're Star Wars fans, etc. Our kids are older, and currently no desire at all to see Beauty/beast, The dance party thing, etc. We don't seek out meet/greets, dont' need to ride Swirling Saucers, etc. but do want thrill rides, and multiple rides on those when possible.
Shows can take up a lot of time, the waiting to get in, the sitting waiting for the show, the actual show, etc. We're not really show people, Have only seen Fantasmic twice, about 16 years apart, and I'm good for another 16 years. But if I'd never been to HS/seen it, I'd probably seek it out.
We're massive Star Wars fans, so even though GE is limited, if one was a big fan and doing a lightsaber build and/or droid build, that can take a while. We like multiple rides on Smuggler's. Oga's take some time, seeing the Mandalorian, etc. etc. We even always work in time to walk around Launch Bay, just looking at stuff, but haven't met the characters there in a long while, but we totally would if it was our first time, and those meet/greets take time!
We usually find ourselves at HS at least twice on our trips, often more, usually for a few hours in the morning, and/or a few hours in the evening. We love HS, and looking forward to anything/everything they can add there, like the Monster's coaster.