I understand. Deadpool does seem a breath of fresh air compared to the main continuity (though I'm not a Deadpool fan), because of just how dominant Wolverine has been depicted for the past 17 years.
I think that the error of the X-Men series was not to build off of the original 2000 movie; instead of X-2 building on the arc of Rogue and Wolverine as friends, and then the franchise revolving around that friendship, movie after movie after the 2000 film went completely off course, and just became utterly random.
The Wolverine spin-off trilogy encapsulates everything wrong with the X-Men series, while Days of Future Past just had Rogue in a cameo role, and was just about making Wolverine look stronger and better than every other character.
It's just a shame, that after 17 years the original 2000 film still holds up to scrutiny, when in theory many sequels by now should've made that original film irrelevant.