[Suicide Junkie]

Well, in Trek, all of the main races are oxy breathers, having been "seeded" by the same precursor race.

The tholians are very different, not sure what they do.

Vulcans/Romulans have less oxygen on their world, you could possibly stretch that and make it CO2.

Borg just capture all other races to assimilate, so it dosen't matter what the start with.

The cardies may have screwed up their resource management on the homeworld, but they're still oxy breathers.

In the Trek universe, 95% of known races are oxy/rock. This means more competition for the M-class worlds, and nobody bothers a second look at the hydrogen/gas giant.
A lot of planets are left uncolonized, and your outPosts are all military or mineral (dilithium) miner colonies.

Just accept that that huge methane world will never be as important as the small oxy/rock next door, until you can set up a atmosphere converter.

Its a change from having every world breathable by somebody's colonists, and forces you to build improvements, rather than dropping a different type of colonist.


[This message has been edited by suicide_junkie (edited 13 April 2001).]