If he does beat Nate what does that actually prove? That he can go 1-1 against the #4 ranked LW? (bearng in mind guys like Ferguson, Barboza, Mendez etc who are ranked lower are extremely tough matchups for Conor).
And if Conor loses against Nate, his rematch and title defense against Aldo will still be a huge draw and in some ways will be even more anticipated if he's coming off a second loss to Nate.
Either way I personally don't see Conor fighting after his current contract expires, but that's 4 or 5 fights away so who knows what the landscape will be like then at FW and LW.