So since it should be inevitable for a B5 mod to get made, i figure it couldn't hurt to talk some about it, and perhaps maybe plan and get a team going for it.
Major Major Questions...
1. How many playable races to attempt, and which ones?
2. How many ships per faction, should ship roles/designs and numbers be based off the existing Sins races or not care?
3. Which general era of ships to use for the Earth Alliance?
4. Should capital ship mechanics remain the same? IE should the current game mechanics be kept in more or less the same condition?
My personal ideas is that the general game should play about the same, but that many ships should be condensed into one for some races, or expanded for others, notably I am in favor of maintaining only 3 Capital ship choices, as I think finding 5 for each major race would be quickly silly.
I would say for the beggining 3 balanced major races would be best, in general I view the technical/qualitative tiers being as such
Lowest: League Worlds, Early EA, Dilgar
Medium: EA, Centauri, Narn
High: Minbari, Drahk
Godish: Shadows, Vorlons, Additional Ancients
The mod would preferably come with several maps, one of which would represent the B5 universe just before the shadow war, it would be nice if a timer was included so that perhaps 3 hours into the game 2 special pirate worlds (the Shadows and the Vorlons) launch massive and mean pirate strikes... regular Raider Pirates would otherwise conduct themselves normally.
Other special maps/scenarios: Dilgar EA war... Earth Minbari War, and Narn Centauri War (The Shadows should/could be present here as well.)
While some races would be playable in these scenarios, for example in the Earth-Dilgar war you could play these or the League worlds, as the Early EA faction would be balanced with them; but the Earth Minbari War should be a 2V1, with the Minbari being powerful enough to take on two players.
This means that in the generic game, the balanced races would be EA, Narn and Centauri. The Minbari, Drahk and League worlds would all be special militia or pirate forces, we could easily design new planets that corresponded to these races and would spawn with special militia units, thus you wouldn't have Minbar being guarded by Raiders or Drazi.
Ship wise, the most important is obviously the Capitals- My personal choices for the 3 main powers are as such, with the TEC similar ship noted.
EA: Omega Destroyer (Kol) Posideon Super Carrier (Sova) Nova Dreadnought (Marza)
Narn: Bin`Tak Dreadnought (Kol) G`Quan Heavy Cruiser (Dunov) (Third????)
Centauri: Primus BattleCruiser (Dunov?) Octurion Battlship (Kol) Balvarin Carrier (Akkan?)
Additional Scenarios: Psi Corp Rebellion, EA Civil War, Mars Rebellion, The Centauri-League War (with Drahk as Pirates?) The list goes on and on.
Oh and for the EA, I would use Hyperions as the basic combat unit, to give fans an iconic mainstay for their fleets, as opposed to the too awesome for Frigate Omega, and the lesser known Olympus, Tethys, Saggitarius, or Oracle... (or the others