@Shapky86 I just noticed that the nightmare scenario isnt all that bad. Look:
Either Aldo or Edgar wins the interim belt and fights McGregor for the belt @FW next.
If it's Aldo vs. McGregor and McGregor wins he immediately moves to LW permanently, after all he just defeated the FW GOAT twice and Frankie doesnt deserve a shot, coming off a loss.
If it's Aldo vs. McGregor and Aldo wins, they immediately go for a rubber match with promotion the likes of which has not been seen before.
If it's Edgar vs. McGregor and McGregor wins he immediately moves to LW permanently, after all he just cleared out the division.
If it's Edgar vs. McGregor and Edgar wins, McGregor fights Aldo in a grudge macht next: Both coming off losses, both seeing a winnable fight, and both already established opponents, so the promotion writes itself. Massive fight even if it's not for a belt.
So really the UFC is fine with all outcomes. The problems start once McGregor loses the next two, but by then they'll have made shittons of money off his name already.