Like why even have bolts? Extra tedium and calculations to what benefit?
I like the idea. It'll add skill (and personal flair) to ship building. Optimizing the number and placement of bolts can be fun as well. If you don't want to bolt things, you can just use the Auto-bolt tool and then buy your ship from the station.
placing your center of thrust behind your center of mass results in greater stability- don't ask me why
I don't think that's what's going on in the video, cuz there's no lift in space. In the video, all of the mass was to the rear, so the front maneuver thrusters are much more efficient than the rear ones. There's also a torque because the CoM is higher than the thrust line I think. So the inefficient rear thrusters couldn't counteract that torque, and as a result you see the ship pitching up. At least that's my guess.
In Space Engineers, gyros were strong enough to prevent stuff like this. In this game, you'll probly have to make sure you have maneuver thrusters everywhere away from the CoM.