"You can eat a lot of food at a buffet or you can just go for that 2 course meal that is really going to be small and just the right amount but this one is going to memorable.
Personally I'd be up for a Mario Odyssey-style Astro game where instead of linear stages you've got a few more open areas to explore and find bots in... But at the same time, I'm completely satisfied with the game we did get, and I absolutely wouldn't mind if Astro Bot 2 works exactly the same way, just with new stages. I'd buy it day 1.
Buffets usually do suck. It's a good analogy, usually buffets are like cafeteria food, they're ok but you can't make a delicacy en masse. So, yea they could've made a big, boring 50 hour snore fest of repetitive grind, so some weirdos who think they should get a hour per dollar spent would be happy, but I'm glad they went quality over quantity.