For realistic turning; the calculations are complex and (even though it's not prohibitively expensive if done right) Schema has more important things to do than to significantly change everything. Adding mass to the current "overly-simple" calculation would be easy and would make it more realistic. Taking thrust into account would also be easy and would also make it more realistic.
However, if we're going to look at realism...
Let's look at an Imperial class Star Destroyer (from Star Wars):
This ship has huge thrusters on the rear, but none on the front. When it's moving forward, how does it slow down?
This ship also has a nice aerodynamic shape. Why? How much air is there in space anyway?
This ship is fairly flat. Why? Is it so that it creates a huge target for enemies above and below it, or so that it's thin and easy to punch a hole through it?
This ship has a tall antenna on top of its bridge (the rod between the little balls). Why? We use tall antennas on Earth because the Earth is curved and more height gives us more distance, but wasn't this supposed to be a space ship (and not a building on a planet)?
This ship also has a relatively large bridge; but we already have the technology to automate the daylights out of it and the crew would be one captain, a bunch of maintenance engineers and some lazy pilots that spend most of their time waiting for something to do. The bridge only needs to be large enough for 1 person (but then we already have the technology to do VR helmets too, so the captain could fly the ship while on the toilet with no need for a bridge at all).
This ship has windows along a thin strip down the left/right edges; but none in the top/bottom. When there's no natural gravity and "down" can be anywhere you like, why?
This ship is a completely unrealistic piece of poo. A doom cube would be far more realistic.
What can we do to counter the unrealistic "accidentally built an aeroplane and/or boat" ships?