Well, it wouldn't do to create a Coma Star when the heroes have already beaten the Death Star. That would be a walk in the park for them, hence more advanced weapons. Not to mention the fact that with time comes progress. As for the characters, Luke could take down Kyp and Mara at once if he goes full throttle, Winter is Leia's aid and friend (every girl needs a best friend), and not really better than her, and Han could take down Dash every day of the week and twice on Sunday. Hell, Dash doesn't even remind me of Han in the least. Only the fact that both are smugglers and one's ship is a newer model of the other's. That's all superficial. Characterwise, they are very different.