You mean to sit on top of the community tools scripts? Those will set the membership, but you have to run them manually. I agree though, this is a prime automation opportunity to wrap around that - just haven't had the chance to do it yet!
Gotcha. I was thinking a little broader - maybe an input to put in new users to onboard, select which groups to add/create new, generate the current user file, automatically update it, and then run the command to add.