I wrote about Genesys earlier, but with more familiarity with the system, I’d consider recommending it for the group at some point. The core mechanic is really lightweight if you have play aids (and Roll20 has a Genesys game system plugged in already), and the choices players make tend to be around “how do I spend advantage”. There’s tables of options to pick from, with 2-3 options per tier.
I wrote more about this elsewhere, for example a post about Conan the Barbarian in Genesys. The core book includes some space opera stuff as well, and could probably recreate the characters from this game with little to no effort (for example). I’ll run a demo for any interested parties at their convenience.