Yeah, that's another thing. The "gorging on death energy" thing is a ridiculously shallow villain motivation (and FWIW, also not even remotely scientific; it verges on the supernatural).
Yeah. I guess another issue I had with Coda is I was never a huge fan of "Time's Arrow" to begin with. It's ok. It's not the worse Star Trek out there. But I was really surprised the Devidians ended up being the villains. I can't say with absolute certainty of course, but I can't remember a time when I heard someone say they really hoped we had a follow up Devidian story. Certainly I never felt any great need to return to that story.
I'm still really shocked the Krenim weren't the villains. I always had a strong feeling time travel would play some role in Coda and I thought that's what Kirsten Beyer was setting up for in To Lose the Earth. Then nothing but a token mention that they were wiped out. I know people have said this was based on some directive from on high somewhere (though I personally have never seen any official confirmation of this and certainly no reason for this).
In a perfect world I'd have loved to have seen the litverse continue as an alternate timeline. But I realize that's not how things work. Especially now when we didn't even get 6 books this year (and who knows how many for next) there just isn't enough room for litverse only releases. The emphasis is going to be on tie in's on actual shows going on the air right now, and the original series. I'd be surprised if we see any tie ins to the older tie ins like DS9 or Enterprise, at least for a while.