once per empire upgrades of certain buildings

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LordIII3

First Lieutenant
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Sep 14, 2016
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It would be cool for roleplay or planet specialisation reasons, if some of the once per planet unique buildings would have an once per empire upgrade available.

Eg.:

Upgrade of noble estates: Palace of the emperor
+3 Housing + 3Noble Jobs

Upgraded Citadel of Faith: Central Nexus of Religion
+3 High Priests + 2 Priests
; +25% Priest output

Upgraded Research Institute: Main Research Campus
+3 Science Directors, +2 Researchers ; +25% researcher output

Upgraded Ministry of Production: Headquarter of Production
+3 Administrators ; +20% to alloys and consumer goods

.....

Do you have any more Ideas for once per Empire upgrades that would be cool?
 
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