I think this is it for the series.
Obviously outriders wasn't in an amazing position as it was, they had a rough launch and the game was overlooked by a lot of people despite being decent fun. From what I've read, this DLC is fine, but doesn't really add anything interesting to the game. I can't see any buzz about it anywhere, and of the 400 or so people I have in my friends list on PS5, I've only seen two of them playing this.
It just doesn't seem like much of an offering, really. As others above, it feels more akin to a season in Destiny (something they sell for £10) as opposed to a fully fledged £40 expansion. If we compare it to Destiny 2's full priced expasnion, Witch Queen, then Outriders offering looks pathetic.
Outriders in general seems really confused in what it wants to be. Is this a game focused on offering lengthy linear story driven content for people to play, or end game activities? The two don't seem to feed into each other very well. Destiny leverages most if not all of the campaign content it offers into areas that are ran through over and over as part of end-game activities.
People Can Fly, seemingly can't push out content fast enough to deliver a lengthy campaign on a short time frame, so they probably should have focused on designing highly replayable activities. Maybe a roguelike mode or something of that ilk, perhaps a seasonal leaderboard thing like Diablo has. There are more interesting things they could have tried than what's on offer here.