My mod spawn enemy waves as well, and there are "builder" units that may build spawners.
I'm not sure what the "weird interactions" is.
Just the fact that the bugs are jumping planets for whatever reason. Planet Castra spawns "Battle Tank" enemies from Data Collectors based on how much data you pollute the area with. There are no biters of any kind on the Planet at all.
If this is intentional I'll take it as such, but I just find it a bit odd that they're spawning here when attack points reach the cap and a wave spawns.