DR will have a completely redone tech tree, civilizations, improvements, units, and resources - hence the clean map that can be used for whatever you wish.
The civs will be conglomerates of current countries, grouped together by forming 31 roughly equally sized civs based on the projected population in 2100. I don't want to go too far into details here (you can go
here to learn more about it), but suffice it to say they will be placed in the region from which the people originally came, only starting from scratch with no knowledge of the past, and being a quarter of a billion years later, the continents look a bit different too. There is a mythology behind the mod I won't go into here, but suffice it to say that while this will play as a historical mod, there will be elements of fantasy and science fiction, but these will be minor, background elements. There will be no magic, you will not be able to control dragons or fly into space or use a lightsaber or anything like that. Most of these elements will be in late game anyway, and are mostly relegated to the backstory.
All this to say:
1. Starting locs are fixed, and those that are otherwise ill-placed will have something, likely a very nice resource, to offset that bad luck, while others that seem to be very well placed will have things, likely a negative resource or a lack of resources or a very strong barbarian presence hamper them.
2. Resources will mostly
not be standard, though there will be some overlap with the base game. There will also be some very rare and important resources, which should trigger some nice wars.
3. In the standard game, you can get 2 second palaces only if you go with Communism, which I never do. In DR, each trait will have a unique Small Wonder that acts as one, so all civs have 2, regardless of Government. Each one of these will also be required for a unique trait-based Wonder too, but that is unrelated to corruption.
Those of you who knew me by my older handle know I do love my resources - expect 8 Lux, 24 Strat, and a large number of Bonus resources. Resources will all be hand placed. Not all resources will be available to all civs. Resources are going to be much more vital in this mod than in standard game, and not all are going to be available within any possible city limits.
Doing some basic math, with 31 civs, you can get 16 on average before hitting the 512 limit, so perhaps I will start that number there. That way only civs who've grown bigger than their allotted size suffer...