I also had an idea like that.
Even just a mode where you can choose every single microgame that goes into the mix.
Like, you go through the index and mark all your favourite games. Or all games with a specific theme. Or whatever you want.
Or just the option to play the skyscraper modes with different stage themes. Like, what if I wanna play Penny's stage, but with every single microgame?
Online multiplayer would still be nice...
I'd love to hear more remastered versions of old themes. Like Jimmy's Night, Vision, or that one Radio song from Twisted.
And of course a full version of Drifting Away.
And maybe just a few more stages with more microgames and a boss stage.
They could also add more Fronk and Mike-rogames.