I think for NE Enemies it should be quite simpler (hopefully ;) ) to update it because there are not so many collisions with entities and recipes.
Didn't NE Enemies have the same darts and prototype artillery as BI? Perhaps I'm confusing the two mods … :-)
I don't see any darts or artillery in the code, there are only the biters and artifacts collected from the biters .
I think only changing the "version" to 1.1 will perhaps work. If I have any time this week I can try something :D
I think the more challenging stuff is all in NE Buildings