Would be cool to have a $5-10/month plan that only works off-peak, for people who want to do the occasional side project after work. Right now it's hard to justify anything but Copilot (because it's cheaper, offers the same models, and I'm nowhere near the usage limits).
I suspect that any GPU cycle not spent on inference will just be dedicated to training (which as I understand it can “soak up” essentially unlimited compute at constant value per token), and I’d not expect to see time-based billing until that changes.