The strategic resource improvements need an overhaul.
The Durantium Refinery shouldn't yield Production because durantium is too common, making it very spammable. It should yield Manufacturing instead.
Antimatter Power Plant needs to be renamed to something else, such as Antimatter Reactor. Then Antimatter Containment can be renamed and a _______ Power Plant can be added to fix the tech tree.
Some ideas for reworking the strategic resource improvements:
Civ-Wide Bonuses
Durantium Refinery : Manufacturing +50%, Civ-Wide Manufacturing +5%, +2 Level to Manufacturing
Thulium Data Archive: Research +50%, Civ-Wide Research +5%, +2 Level to Research
Antimatter Reactor: Civ-Wide Production +1, +1 Level to Everything
Level Bonuses
Durantium Refinery: Manufacturing +50%, Manufacturing +10%/Level instead of 5%, +2 Level to Manufacturing
Thulium Data Archive: Research +50%, Research +10%/Level instead of 5%, +2 Level to Research
Antimatter Reactor: Production +10%, +2 Level to Everything
Adjacency Bonuses
Dyrantium Refinery: Manufacturing +50%, +2 Level to Manufacturing, Military, and Research
Thulium Data Archive: Research +50%, +2 Level to Research, Manufacturing, and Wealth
Antimatter Reactor: Production +1, +3 Level to Everything