Thrilled to see this mod continued!
Question though, in Bob's we have giant, titan, and behemoth class aliens. Will these all break down straight to "large" or will they go down one step at a time (which could be terrifying but awesome)?

Unfortunately I can't tell yet. A little later.

Unfortunately, a behemoth biter splits into several mediums and smalls. :(
I don't suppose you could up the stakes by progressing them down more of the tiers?

I'm going to try

That would be most epic.

So the progression would be...
Behemoth -> Titan -> Giant -> Large -> Medium -> Small

You could also give the user a setting as to how MANY are spawned upon each death. You could even make it a range.
For example, you could have the user specify that between 2 and 5 smaller biters spawn out of one killed biter.

There are a lot of ways to play with it.

Also, I just realized you're not Supercheese. Has he said anything about if/when he might update on his end?

I'm working on an update, need to add support for new NatEvo enemies (and 5dim), among other changes.