I'm 6'3, so I appreciate the full adjustability of the seat. lol
I'm aware that I'm near the conservative end of the spectrum here... I'm by no means an extreme modder. But this is my perspective... take it for what its worth.
A lot of us aren't building race cars. if we were, we wouldn't have bought a 4 door to begin with. Any mod I do is done with increasing overall capability of my car. I'm not going to sacrifice functionality or driveability for performance. I've thought about putting in a 4 or 5 point cage with a harness bar for autocrossing and such.. more for kicks and the fun of fabricating it than true functionality, so I'm probably not a customer for this kinda thing. So I'm just trying to speak for those who are trying to maintain the full usability of our cars when modding.
Feel free to disregard my opinion, because in all honesty, I'd have to see it in person to formulate a real opinion. But as faruld as fit and finish, unless theres a reason the bracket mounting on the top is so long, I think you could eat up the length with tube and have it look nicer.