I think 7 wins is fine. Here's how I see it, if you go Flawless, you're getting adept weapons/ mods from the chest, I'm not sure if you need to stay Flawless on that ticket for them, but winning matches can give more adept weapons, and then there's the adept weapon you can buy. That's how it is now. If they changed it to be just 7 wins not for the Lighthouse, but for the weapon, that could work as well since Flawless would be giving significantly more rewards, but the one thing everyone is after isn't locked behind the game putting you in good matches.