The FT04 comes with our highest performing fans, the AP182, which are upgraded fans over the AP181 included in our other cases. They have dual ball bearings and better IC to enable higher speeds. They are fully adjustable too so you can fine tune the exact fan speed that strikes the best balance of cooling and quietness.
As for magnets on its door, they are tuned to hold the door shut in normal usage (level floor) but easy to open by hand. Obviously with a heavy unibody aluminum door, it is going to swing open if you pick it up from the rear at enough of an angle. But with a case this heavy, we'd recommend that you pick it up with both hands anyways, so this should be a none issue.
And for poor cable management, this must have been a mistake because the FT04 is excellent for that as it has sizable room behind the motherboard tray. Those we thought FT02 was manageable would think FT04 is too easy!