We already have ZAS.
We already have all of the cyborg modules they have except for rare Peacekeeper (only available via xenoarcheology, which we did not port) and Combat (Red Alert only) modules.
Fair enough, we need latejoin and midround antags. Secret gamemode should be brought back first though.
If you want moar alien species,
port all of the non-furbait ones first, to be precise: plasmamen, greys, mushroom people and skeletons. Though speaking from experience, bugs are fine too
unlike v*x.
I should have been more specific, For atmos I was talking about the piping and atmospheric devices (namely everything you need to make supercooled plasma).
For cyborgs I should have said silicons in general. Specifically sounds that play when laws are updated and the AI notification beep (I don't even know if this is possible with the current undefiled UI schema). I would say add the MoMMIs but we already have those as a ghost role.
Another ghost role I enjoy is the derelict, I found it to be a really nice way to learn engineering, R&D, and construction systems when I was brand new.
And yes please secret gamemode, nukies and xenos are fun on their own but they really could do much better as a surprise.
As for furbait races, I would like to share my experience as a TransGenderstation and /vg/ player for this:
Tajaran and other cat-related races, including /vg/'s catbeasts, not even worth it as a joke, should be strictly forbidden.
Moth men and Vox were fine at first but did not take too long for furniggerfags to become amicable to it, should be strictly forbidden.
Same goes for Rachnids in my opinion, but to a significantly lesser degree (only due to obscurity I think).
Basically any non-human race needs to be plain and largely lacking in color or 'cuteness'.
For this reason I think Unathi are fine provided they stay plain green without all the horns and frills options.
Skeletons/dionaea/golems/blacks/mushroom/crab/plasmemes/greys etc are great because they do not relate to furfags at all.
Insectoids as implemented on /vg/ are really pushing it but would fit the model if restricted to plain grey and ztuck with the annoying lizp.
But the best solution is to simply prohibit these people entirely. You might not have any concerns for furfag activity because mental disorder never comes alone. So if you call everyone niggerfaggottranny they might not even want to be here in the first place, there are dozens of other 18+ servers they can go to instead.