Neinzul colony core guard post.
Build up points, and when triggered, a lot of Mk. V Neinzul ships are spawned.
Would have a max buildup and possibly faster buildup rate than the Mk. V AI neinzul colony.
(Note, I am talking about class pf Neinzul spawnwers that spawn "normal" Neinzul bonus ships, not the viral ones or the special purpose bomber ones)
Also, for versions of the Neinzul viral cluster and bomber clusters would work too, with similar comparisons as above.
Being a Neinzul regen chamber as well may be a good idea, if the AI learns how to use these properly.
EDIT: Relevant jira issues with AI and regen chambers
9102: AI Neinzul regen chamber causes really stupid behavior11437: AI rarely, if ever, uses Neinzul Regeneration ChambersThere are also a ton of regen chamber usability improvement ideas. Just search for "chamber" on mantis.