It's hard to value how much beating Till would be worth. We could easily see an Ngannou-effect if Till is dominated by Woodley, and then loses again.
I agree Woodley should be considered one of the greats but there are a lot of greats at WW.
His list of wins is quite impressive. Daley, Kos, Condit, Kim, Gastelum, Lawler, Wonderboy, Maia.
But there are so many other greats at WW I'm not sure how Woodley stacks up against Lawler, Rory, BJ, Hughes, Shields etc.
Remember that Woodley has only got 5 wins since he lost to Rory McDonald.
And he's only won 2 title fight defenses. (Compared to GSP's 9)
Remember how many other welterweights were on similar 5 fight win streaks. Lawler, Condit, Maia, Wonderboy...
It's too hard to judge a fighter's legacy while they're in the middle of a streak.