Used to be, if you skipped the DLC for a Dragon Age game you'd miss at least one important part of the story. The Awakening expansion for Dragon Age: Origins introduced Anders, who returned in Dragon Age 2 as a central character. Dragon Age 2's add-on Legacy introduced Corypheus, who returned as the main villain of Dragon Age: Inquisition. And heaven help you if you play Dragon Age: The Veilguard without first playing Inquisition's plot-critical expansion, Trespasser.
You don't have to worry about missing the one essential DLC for Dragon Age: The Veilguard, however, because apparently there won't be any. According to Rolling Stone, who interviewed creative director John Epler, "there are currently no plans for downloadable expansions" and the studio's "full attention has now shifted entirely to the next Mass Effect".
