Tomice
Passionate Smart-Ass
I guess I just don't see "why" at all. Why are extra science, culture, and gold needed?
The Palace in vanilla has 3331. I think we can agree that this makes the capital quite an obvious choice for most (national) wonders. Not to forget that the capital profits more from maritime city states, it profits from being the oldest city and it profits from an often artificially ressource-boosted position.
We had an agreement AFAIK that it'd be nice if other cities had a chance to become equally or even more important as our capital (Not the biggest problem of BNW/CEP at the moment, admittedly).
Thal already changed maritime CS to this end, and now we're looking to get rid of the relatively large yields the Palace provides. We can't just cut them, since the early game would suffer a lot from low yields (by being boring).
My suggestion was basically to change initial production from +3 in the capital to +1 in every city and +1 in the first three cities. This should favor wide and make the capital less unique, while not changing the initial game pace too much.
Agreed that a mixture of per-city yields and national yields should be used first and foremost if applicable, but this doensn't work for production mainly.