IMO that the screens so far are from right at the end of the game. IMO at the start the Rebels will have the Corellian Corvette, Nebulon-B , the Galofree Med Transport, Y-wing and Maybe the Headhunter. The Imps will have the Ep3 units, Tartan Cruiser and TIE Fighter and TIE Recon. The Imps will have greater stuff bbut will probably take longer to get to the next research grade while the Rebels will steal loads of tech quite quickly allowing them to get the basis. Rebel Fleets were usually a MC80, a MC40, Nebulon-B, 3 Corellian Corvettes and 2 Gunships. Imperial Ships were constructed to work in small groups of 1 or 2 ISDs with support craft. That is why I am so surprised not to see Carrack Cruisers. They were an Integral part of the Imp Fleet system.