It is interesting to read that there are two different factions: The supportor of an "ready for occupation"-universe and the supporter of an "developing earth". I personally prefer the last one especially because of the developer: Paradox has "real" szenarios in EU, V und HoI - it's kind of a brand. Therefore I would like to see the typical "historic" beginning just because of the possibility to "develop" the timeline. I think - like allready proposed - 1990 could be a great start because the factions would be simple: "NATO", "CCCP", "People's Republic of China" and "Non-Allgned-Movement". For the near future I would suggest the ("real") USA, EU, Russia and China.
For all intents and purposes, we'll boil down the initial game to a starting six factions on Earth: the United American States, the Soviet Union, Mittleeuropa, Eastasia, and Panafrica. Each faction has its own culture, different tech positions, wealth, political system (ex. UAS = Democracy, Soviet Union = Proletarian Dictatorship, Mittleeuropa = Constitutional Monarchy, Eastasia = Absolute Monarchy, etc.)
I guess we could make it more complex: Concerning to my "Federations" there could also be "companies" and "religious powers". You don't have to rely on a world goverment like in Star Trek to expand to space. There is also the possibility that strong companies will manage it: Like your beloved Weyland Yutani from Aliens. I guess it would be great if a player would have the choice to use a company or a state as source of a new galactic empire. As a company you would be able to use ressources from other federations who don't rely on protectionism and you just have to supply your worker and not a society (Poor, workless etc.). Later you can lead a government in a hidden (corruption) or open way (dictatorship). And you can do both: Create a facility on Mars, make it an independant state and stay as a company on earth.
It would be a great opportunity to give the player the power to develop the society of his fed in a certain way: In Victoria you just had the possibility to delay the transition into a democracy. A real choice would be great: Good or evil company like in Robocop which replace the state. A (grim) monarchy or military government (Dune, Starship Troopers) or democratic government. Or an religious power (Empire - Warhammer 40k).
Frederick III said:
Then, say about 200 years into the game, someone a new engine back on Earth, and the universe suddenly gets a whole lot smaller...
I just don't now what would be the most reliable technology for light speed. Maybe the "Einstein Mechanism" (=EM)) to bend the space similar to Star Trek (Or Dune?) or an Hyperspace like in StarWars/Babylon V? And should it be invented on earth or can you find the blueprints in an abandoned xenon complex on Mars?
By the way: A "developing earth" and a "ready for occupation"-universe don't have to be mutually exclusive. Like in StarTrek there could the possibility that the major factions will not contact the minor ones till they develop warp-drive. I guess the real problem is that it would be implausible when the earth - just grown up - could face the older factions. That is also the reason why I don't want to see (living) aliens in the game. They are supposed to be supreme species.
On the other site an empty galaxy without enemies isn't a real challenge. So it would be solution if the other frac's (fed's and com's) will create they own future empires similiar to the player. The possibility for one frac to gain control over the whole earth could be limited: Because of the population - scared by a possible nuclear war - you will not be able to get the earth before the majority of your population is living on other planets. So they don't care anymore^^.
edit:
Btw: Like in "Hearts Of Iron" - provinding the early 1936er and the later "Götterdämmerung"-scenario as start - paradox could offer the possibility to start in - maybe 1985 or 2050 - by scratch or in something like 2150 with an developed galaxy (except of the outer rim) ruled by human Empires, Federations, Companies etc. with the Earth as Center.