Yeah, I was mostly thinking of it as a way to try stuff out and see how it works when I have some downtime/am not near my minis to set them up.I find Fly Casual to be really limited because there are some game features it just can't automate. For instance, I've heard that Rigged Cargo Chutes currently can't be used at all because the engine doesn't support adding obstacles after game start. The AI is also pretty bad at flying a great proportion of list archetypes, particularly anything relying on exploiting synergies between ship/pilot abilities and Elite pilot talents or flying in formation.
That said, if you don't want to take the step of finding another human being to play against on Tabletop Simulator or Vassal, it's one way of getting some practice in.
Mostly I hope to play against my family (and friends, when they are over)