A lot of years ago I used to play FASA's battle tech games. The concept was similar to x-wing: spend points, buy and modify your battlemech, combat with it.
What I miss in x-wing? Campaign books. I know there are a few missions in the large boxes, but are unstructured. What I'm dreaming of is a series of missions linked in some way and involving some strategic decisions. The idea is to follow a path where each step is a battle. Factions alternate deciding which step to follow (or winner decides), but new paths and options open/close depending on the results of the battles and on the branch taken.
Before each step the factions can spend points (like in a regular game) but maybe with some limited options depending on what happened (ex: rebels won the battle at Sienar's bombers factory? In this step imperials have to attack the rebel capital ship without tie bombers).
Options may involve which system to bring war on, and different systems may have different facilities/missions. Some "interludes" May involve some "bonus missions" sporting Han Solo protecting a bothan spy which may not be central to the campaign, but "unlock" some options for the faction. There is enough for different campaign books 50 pages each... And could sell for 35$ each. Maybe more if they also include some cardboard specific obstacles/defenses.