I might be getting whooshed by the rulebook, but here goes!
Surely if Rangers SFA membership is suspended, they can't play in the SPL or SFL, or the Scottish Cup.
Without a pyramid system in place, there is no way for them to re-enter the leagues, other than another team dropping out and them winning the application process, which isn't guaranteed (although we all know it probably is!)
So suspension would lead to either a pyramid system with Rangers re-entering right at the bottom, or the destruction of Rangers.
I'd be happy with either outcome, although option 2 is still preferable!