I guess if the FD and all that really cool stuff doesn't work you could just lower the nose so you aren't stalled any more like in a J3Cub, P51, F86, F4, Concorde, B747 and all other aircraft certified to fly.
stoney ground . . . . .
Besides which, sooner or later - someone is going to twig that it had no reliable ATT info and you won`t hear the last of it from me . . .tum ti tum . . . .
What information exactly would this show to the crew?
The attitude of the 3d symbol aeroplane If symbol flying S&L then actual aircraft is flying S&L - with integrated gyros, too, you can also get away from accellerations caused by gravity/centripetal force/inertia and toppling or the need for re-caging - why, you could rig all this up with a . . .laser ring gyro, bring that back into production, its not much.
If you want to play fighter pilots then yea, ok, bring in a HUD - this may even be easier to . . produce than my cartoon type 3D aircraft symbol which acts on all planes/axis. In fact (sorry, am rolling) you could simplify the whole shabuble with a green light on all of the three INS`s:
If L/R/UP/DOWN/Yaw = zero then zero = S&L When S&L (during alignment) a little green light shows on the front of the INS there are five lights 1 up 1 down 1 left and 1 right and 1 in the middle the one in the middle is green. The 1s on the outside (up/dn/left/right) are red - if you get a red light you are not S&L. If you get the green centre one you are.