Am I the only here that likes the Hexblade subclass for what it is without adding multiclassing or anything ?
I mean, I really dig the thematic of this subclass and I don't really see why some say it doesn't fit the Warlock class. I'd say this is more a question of preferences than anything else here.
Getting power from a sentient or shadowfell weapon/artifact sounds as good to me than getting from a random devil or far being.
However, I do agree that too many features of the subclass is front loaded on the 1st level and that having some merge within the pact of the blade may be a good thing...though I'd say it's more about getting the Hexblade paying for the sins of others classes (hey, paladins!) exploiting the feature to easily.
By itself I don't consider Hexblades to be that powerful. Good, yes, but not game breaking even though its other features form a nice package (medium armor, armor of hexes, the quite fitting spell list).
I've always hated multi-classing and felt it makes an already somewhat janky system even worse. According to Wizards of the Coast though, only slightly more than half of players multiclass, so I guess there are plenty of people that agree with you. Though you can multiclass in Pathfinder, there are a ton of classes that are 'purebreed' versions of multiclass designed to borrow playstyles from the original classes and meld them into something different with internal synergy.
That said said, if you really think Hexblades aren't 'good' (something I disagree with unless we're talking hard cheese, but whatever), then you should honestly LIKE this change, because now it means you get to be a hexblade + a typical warlock subclass and get the benefits of both.