I find that DLCs are hard to make compelling.
Like, when they're just a small addition to the end of a game, it can feel kind of forced and shallow. Especially when they introduce skills and equipment that have to be direct powercreep in order to make them desirable for characters that have just gone through an entire game worth of optimisation and gearing up... (Which can also get even worse when this extra powerful stuff can be accessed mid-way through the game then after you finish the DLC and go back to the base game the balance is all out of whack as you're a walking god compared to what everything is scale for)
While larger things can feel like they could have just made a new game instead, fleshing out the content that little bit more and using the opportunity to rework and polish any features that stood out (Or integrate new ideas that arose).
Even more so if said DLC happens to be a brand new campaign anyway, meaning it has no reason to be attached to the base game besides reusing the assets to make it (Not that this really stops you making a new game. Take Spellforce 3 for example, each "DLC" is its own stand alone game with a stand alone campaign and bunch of features. But if you own them all, you can access them all together and play custom games with features from all of them)
I've honestly never been excited about a DLC as a result. Even though I've played some that were enjoyable, the announcement of DLC just isn't interesting. I'd often rather get a new game instead.
For example, Grim Dawn is getting a big expansion next month, with as much new content as 40% of the current game (Which is Base Game + 2 other large expansions). But even this just pales in comparison to the announced Grim Dawn 2 game which is just inherently more interesting due to the larger scope of new features and content it can provide (Compared to the expansion for the first game where it's going to be bogged down by all the flaws of the first game... I.e. All the issues derived from it being a modified version of Titan Quest's engine)
