Will this mean a change to the Rubricator?
Yes, the Rubricator should still be very appealing to anyone wo likes to dabble in archaeology!
Will some of the fallen empire technologies come under this too?
Not at this point, no.
So Arcane Deciphering thech is now Archeostudies, right?
Yeup
Will archeo techs get some tech that can be show up in research choices normally? otherwise scientists that specialize in that category will be utterly useless.
Yes! The chances are low so don't expect to see all of the archaeotech pop up in your research this way though.
How would the devolving interact with genocidal empires? Since pre-sapient purging is technically a different policy from normal species purging, would this force fanatic purifiers/devouring swarms to kill off their devolved brethren by default?
What can I say, they have very unfortunate standards about purity, and very little patience.
Will Devolving Beam reset the trait of pops? I say, if we devolve some pops on a tomb world, for example, will they lose all additional traits and get pre-sapient trait, like irradiated?
No trait reset, it only adds the "Forcefully Devolved" trait that might be tricky to get rid of.
What happens if you build an Habitat over a minor artifact deposit? Does it still mine by itself like nanites, zro and living metal? Does it allow for Research districts?
It just works™ (it mines it by itself and allows research districts)
Will the archaeo tech be much stronger than late game techs normally are or will they have specific unique benefits?
Also this storm generator, can that Technologie also be found in other ways it seems very strong.
As a rule of thumb, expect archaeo components to be between tier 3 and tier 4, with several ways to buff them, and usually an uncommon effect or spin on things. Think late game sidegrade more than straight up upgrade
Precursor tech however are precursor exclusive. I think your only other shot at getting them is by spying on an empire that has them.
But then what happens when you restore the ecumenopolis on your homeworld or any other relic world? Do you loose the minors artifacts income? You need to move the faculty?
If the planet changes class for whatever reason, you will lose the bonuses yes. Better not bulldoze everything and encase it all in concrete if you want to study the ruins of old in peace
Would it be possible to research precursor tech even if you get beaten to their homeworld?
You get the precursor tech after delving into the "Secrets of [PRECURSOR]"
Thank you all for your replies! I'm still just one man so I can't fix all the things in the blink of an eye, but I'm hyped to see you hyped, and I hope you'll have tons of fun with our new additions!