See, a tech tree works where it works. If a tech tree wre implemented, with how Guns is built, there is absolutely, positively no freaking way a tech tree would work. As Kestril put it, no chance, no way, We don't need it no, no.
Now, as for ALLIANCE, they've tried putting that together, something I am going to desperately dislike, only because there are so few weapons and ships for each faction. IF a faction is going to have it's weapons and ships locked behind a 'loyalty' programme, there needs to be much, much more to earn. More weapons, more ships, and not just costume cosmetics. Skills I'm hoping to have as unlocks, though those I think might become more universalized.
I like the idea of the unlocks... when there's more to unlock. I'm going to hate having to leave the Merchant's Guild to grind for my Crusader, but alas, C'est la Vie.