First off
i have the last name file that we had. J worked on that one. It should be a good jumping off point if anyone wants to take a shot at the names.
i'll volunteer to do the back story. (If you're taking volunteers for that.) i have a couple of ideas, i can bounce those off you some time during the week.
i can do the uniforms, too; when it gets to that point.
If you're creating two additional countries, i would say use those for the leagues. Leave Laseron as it is with the original logos. And make Laseron the independent league. You could always name an online league, Beyond Laseron or Laseron Universe.