Well, I saw version 2 and it irritated the hell out of me. Version 1 would have been tolerable.
For what it's worth, this is kinda spoilerish, so.
What really bothered me was the ending of the movie where Deadpool does indeed grab his head in the rubble and goes 'shhhhhh'. All through the movie we're lead to believe that pretty much the only way to kill Logan/Jimmy and his brother is by decapitating them. Fine, I'm good with that. So then Weapon XI ends up decapitated by Logan and so he can suddenly grab his head at the end of the movie? Gimme a ******* break. Yeah, I get the lame contention that "some other mutant power" allowed him to survive, but that's horse**** no matter what. The healing regeneration schtick is the power from Logan or his brother and that's that. I really didn't like the BS about Weapon X having all those powers anyway because why in the hell would something that is apparently controlled bother pissing around with swords and other **** when he could just use the Cyclops blasts in the first place? Oh sure it makes for a longer, more interesting fight, but it's stupid.
That's probably my greatest pet peeve with Hollywood is when something/someone that should be dead by all rules of logic isn't dead. Guys in Die Hard being shot with a hundred rounds of machine gun fire suddenly wake up and yell and need to be shot again
Something decapitated manages to live and grab its head. Gimme a ******' break. Yeah, it's only a movie but it's stupid.
The Deadpool thing didn't really bother me all that much other than sort of straying from the comic books by a lot. I can understand it a fair bit given they were essentially redoing the origin and I haven't read the comic books for a very long time. But when it went from what I considered to be Deadpool into being Weapon XI it just became pretty stupid overall. I dunno, probably just too long for me out of the comic world.