I must say, Sea of Sorrows was superb!
I found it a little tricky to get through the book and don't remember a lot of the fine details, but having it actually played out on audio greatly enhanced the story for me.
Spoiler
While it was indeed a bit of an Aliens to OotS's Alien, interviews with the author have revealed that that was always the intent. Fox wanted this to be a bit of a soft reboot, setting all the pieces back on the board after Resurrection. Dekar was great to hear played by a real person, John Chancer really brings him to life. Same with the rest of the cast.
I was expecting to learn more about the dog aliens here, but I guess we're leaving that to another time, if any.
I also appreciated the way they worked natural sounding conversations about world happenings since Resurrection's ending into the script, didn't sound info-dumpy at all, so good job there
I wonder what they're gonna do next year... if they start on the Rage War trilogy, they'll be presumably locked in on that for the next three years. Due to when these books were originally written, there's a fair number of winks and nods to Isolation in these tales, so it'd be interesting for that to get adapted as well.
We've also got the new Cold Forge novel, which is fantastic, and I very much wouldn't mind hearing adapted at some point in the future, though I don't know if there's a standard grace period on this sort of thing. Out of the Shadows would have gone into production only about a year after the book came out...
There's also the film prologue novels, like Covenant Origins, and Hunters and Hunted, that they could adapt. I'm not sure I'd be super interested in Covenant Origins though, as it's more of a thriller than a horror, and doesn't really feature the creatures at all...
I guess while I'm listing everything off, there's also the comics (Fire & Stone / Life & Death could be quite epic), older novels (Original Sin, please and thank you), doing expanded adaptions of the films themselves (like the Star Wars radio dramas), or even writing original screenplays (is that still the right word for a non-visual medium?) for new audios.
Either way, looking forward to more! (And I do so hope they start putting out, like, two a year or something :3 )