Tesco:
The only predetermined "alliance" is that the Vorlons and Shadows have to hate each other. That is it. All of the other races can ally with whomever they choose. Think of it as an "alternate B5 universe."
That bit about the ancients having 5000 points whereas the younger races get 3000 is interesting, but I'm not sure it is needed. What do the rest of you think?