Kudos, are you proposing that a new stadium would give us a club to support for the rest of our lives ? Unfortunately, due to the amount of borrowing required, I don't think spending outright on a new stadium etc. would give us any more guarantees of having a club to support than any other approach.
I think we can do both though,
It starts with maintaining our premier league status, but with a longer term plan to reinvest a proportion of our income into infrastructure, starting with the training complex.
It's our best chance of a legacy