With Rangers not in the SPL voting reform will happen anyway and supporters still get to mock you for three years. From a Rangers point of view though I think SFL3 would be disastrous. I don't see how you could afford to maintain Ibrox/Murray Park without having to shaft supporters with huge season ticket fees. I would also be surprised if you made it straight back to the SPL in 3 seasons. Also think "fans" would desert the club.
Rangers have went about this whole process in the worst way possible. They should have shown contrition, regret and been humble and attempted to garner support from within the game. Instead they have been arrogant, obnoxious and down right stupid (e.g. court action, boycotts etc). Because of all that I think it is now too late for Rangers. You should have worked with Scottish football to sort this mess out rather than the us against the world mentality.