A primary reason I don't take transit in SLT (But I do anywhere else I can) is 1. It doesn't come frequently 2. It has a significant disadvantage in speed / routes offered
We could consider a dedicated bus / taxi & ride sharing / bike lane on 50 through SLT and then continue the buses around the lake. I host people from around the world at a vacation rental in SLT and they as well as myself complain about having to get a rental car to do anything in Tahoe.