OK, thanks. I'm not sure how much more production boost Earth buildings need in the late game. I find that cities with automated production typically clear out the build lists or come very close in the Cosmic Era.
I was talking about line, that starts with epsilon assembler.
Production boost would be most useful in Information - Galactic era, as a lot of buildings appears here.
If Earth buildings appears in Cosmic/Transcendent eras, then it takes their time to get built.
So I suggest:
Epsilon Assembler - +25

and +25%

Delta Assembler - +50

and +50%

Gamma Assembler - +75

and +75%

Beta Assembler - +100

and +100%

Alpha Assembler - +125

and +125%

Omega Assembler - +150

and +150%

(requires one of four matter assemblers)
Aleph Assembler - +175

and +175%

Those don't replace each other.
Or those just would be percentage increase, that is additive increase of base boost.
Molecular Assembler - +75%

(replaces Replicator Plant (+25%) and Nanobotic Printing Mill (+35%) - 60% base)
Atomic Assembler - +100%

Quantum Assembler +150%

Materializer - +300%

Molecular assembler is replaced by atomic assembler, that gets replaced by quantum assembler and it gets replaced by materializer.
Those production boosts represent vast advances in matter manipulation.
Can Omega assembler require Alpha assembler instead of one of four matter assemblers?
Similarly Aleph Assembler would require Omega Assembler.
Molecular assembler would be simple extension to Alpha assembler, Atomic and Quantum assemblers would be extension to Omega Assembler and Materializer would be extension to Aleph assembler.
There is bug, that hides things even if you have all "hide X" BUG options unselected.
If you unhide all things, then stuff should be there even if it grayed out.
I think game gets confused by circular OR prereq.
That is Atomic Assembler is one of OR prereqs for Omega assembler, but Atomic Assembler needs Omega assembler.
There's a global that can adjust the trade value of workers by a percentage. I just put it in play last cycle. I don't play nor advocate playing with tech trading if I can avoid it so I wouldn't see how this plays out.
@raxo2222 : do you know where this global is?
Its in global defines.
Probably this one - I just searched for "worker" in files

<DefineName>WORKER_TRADE_VALUE_PERCENT_ADJUSTMENT</DefineName>
<iDefineIntVal>-50</iDefineIntVal>