Shouldn't have fucked it up the first time with X-Men Origins and then blew the second chance to have them cross over properly in Deadpool's origin and instead give that Weapon X scene to Apocalypse where it didn't even fit, nor even have the R rating to be done properly.
I wouldn't even say they should do it for a(nother) soft reboot because Fox just can't seem to get their shit together continuity wise or even have a cohesive vision. They might as well embrace their clusterfuck continuity and just do standalone films or connected films wherever it makes sense, as if the X-Men franchise just exists in some multiverse shit. That way the timing doesn't matter. If Jackman doesn't want to do X films beyond a Deadpool crossover, it doesn't matter, just hire a new actor.
I wouldn't even say they should do it for a(nother) soft reboot because Fox just can't seem to get their shit together continuity wise or even have a cohesive vision. They might as well embrace their clusterfuck continuity and just do standalone films or connected films wherever it makes sense, as if the X-Men franchise just exists in some multiverse shit. That way the timing doesn't matter. If Jackman doesn't want to do X films beyond a Deadpool crossover, it doesn't matter, just hire a new actor.