Hmm... I might be up to GM a PBEM game. What genera?
Classic Merchant – Fly around, buy and sell, get rich. It would be up to the goals of the party to drive the campaign. This works well with some player-groups, but often players just sort of show up and say, “Gosh GM, what’s my character supposed to do tonight?”
Pirate – The Anti-Merchant Campaign. The old saying goes. “All merchant campaigns become pirate campaigns after 6 months.” So, why wait? Purpose-built pirate characters with specialized equipment and a ship. The terror of the skies!
Skiptracers – The Anti-Pirate Campaign. This is a great option because the party doesn’t need a ship. If the party does have a ship, a combo Merchant/Skiptracer campaign is a great option and offers lots of flexibility. This combo campaign could be great fun and run a long time.
Classic Mercenary – Start small, get big, lots of fighting ,and MONEY! Role-playing massed combat sucks, so I have all kinds of plans for adventures while the mercs are on weekend pass, while between contracts, etc.
Scout – Exploration/First Contact. Dust off my old copy of Leviathan and lead the players off into the unknown. Very “Star Trek”ish. Lots of options for game sessions. Lots of fun to be had here.
Noble Dilettantes - Go after the secret of the Ancients. With the right players, this would just be SO MUCH FUN! Wealthy nobles with too much time and money on their hands, hunter guides leading them off on adventure, absent-minded professors doing their field research, and don’t forget the professor’s beautiful niece! There is just so much potential for fun it makes my head swim!
Naval – Command small vessels, work up to Heavy Metal. Kind of “Honor Harrington” style. It would be set in the days just before the Fifth Frontier War. The only problem is I don’t know how to NOT make it a tabletop space combat game. The options for character interaction, character development and role-playing just don’t seem to be there.
Political/Espionage – Schemes within schemes. I have a few ideas for this. Sort of “Top Secret” but set during the Fifth Frontier War.
Frankly, I would prefer GURPS, just because of the level of detail you can flesh your character out to. For instance, you can have a street fighter with a point or two in Brawling who is a competent fighter, OR your character might be a talented Golden Gloves amateur boxer with several Boxing maneuvers like Jab, Round House Punch and Riposte. In a fight, the brawler might still win, but each character would fight differently.
I think, because we would never meet face to face and all I would have is your character sheet, that level of detail in the character would be VERY helpful.