I realize that 1.31 is out but I doubt they did any rebalancing--just bug smashing.
Here is part of the reason that 1.3 is harder on the economy and morale. Not the whole story.
I've been looking at 1.3 and 1.2 xml file for plantet improvements.
For morale buildings, first the 1.3 bonus, then 1.2 bonus:
Entertainment Network 5, 25
Multimedia Center 10, 30
Extreme Stadium 15, 45
Zero G 20,50
Virtual Reality 25, 60
Costs are the same apparently.
Economic improvements for 1.3 and 1.2
Market Center 8, 10 Costs: 30, 35
Adv Market Center 10, 15 Costs: 40, 60
Trade Center 15, 20 Costs: 50, 90
Bank 20, 24 Costs 250, 100
Stock 25, 30 (morale improves 10,10) Costs 120, 150
I hope I have these right. I have a copy of the 1.2 planetimprovement.xml if
anyone would like to have it sent to them.
I also want to look at the tech tree costs. Also what are the maintenance costs per planet and per ship?