I must say 3 parts, vore, imagination and the characters themselfs. For example whne Crisis is the predator she always seems extremelly cute and adorable the way she does it. Vivian goes after the watcher's libido or to explode the fetish part of vore . And in general each character is way different, creative and and scome are species that even in my wildest imagination would never come to mind, and yet again you mange to show us how a tree girl hunts (I know the word for them but I fear I might misspell it).
I like your art in general, even when its a background alone we cna appreciate the details in those; it impress me how one of the first/main vore artists still manage sto pull creative and original ideas not only for vore but even for the characters compared to all the new artitst and artstyles that are appearing for the same fetish or species, or fan made characters for a world you created.
I'm in the minority of your watchers that doesn't care about the sexiness or vore or girls at all (not that they're bad; you do a pretty good job of making all of those elements appealing). But aside from that you have a fantastic imagination and do a wonderful job of fleshing out the worlds around the girls too. The detail and atmosphere and perspective is enchanting. So I often come back to imagine those big forests and enjoy looking at a kink that I don't share, because it's done so well.
The technical aspect for sure. While vore is a strong interest of mine, I dislike the Fatal Nature of Felarya, and it definitely bothers me and weights on my conscious, especially as someone who has dealt with a lot of loss in my life.