1) The nemesis was and still is poo.
2) No ship the EA build in ANY era even close to the show thats not riddled with shadowtech (like the Nemesis) should be BETTER than Sharlin. The idea that the EA can withing the crusade timescale, build, on their own a ship that is an euqal match for Vorlon Heavy cruiser is just dumb really if you think about it....
3) Well I personally was never a big fan of slitting the fleet lists up like was done I must admit, thats what in service dates are for surely, they you can CHOOSE to do a fleet from a certain era theme if you want but arent forced too (like you can do league, or signle league race etc). Still you have to look at it really, if you put ALL the EA ships in one list it would be gigantic and there would be about 2/3 of the ships that would probably rarely get used. Would also be harder to blance. (Marathons backed up by Sagittarius with some Avenger carriers full of T-Bolts and cheap oracle scouts anyone, with some Novas in the middle too?)