Well then if trading isn't fun, then it shouldn't be in the game. Anti-fun mechanics contradict the purpose of a "game". I know this isn't true for everyone, but if what you say is correct, then so is this. I don't recall Freelancer requiring a single minute of time invested in trading, yet it turned out to the one of the most popular games of its time.
Every moment of the game should be fun. In real life we have to work before we play, but we shouldn't here.
If anything, combat should be connected with trading, not isolated from it. Ideally when they introduce wings, they should also introduce extremely dangerous trade routes with insane profits. Escort fighters get beefy share for protecting the traders from pirate attacks (be it human or npc). This could solve the income problem for bounty hunters. Of course this is not gonna happen.