Gipsy.....what airspeed do you use for an ILS Approach?
One single set speed for all approaches or do you use different speeds for different conditions?
How do those approach speeds compare to Vbroc and Vy airspeeds for your aircraft?
We also have to consider all of the possible ways an ILS Approach may be flown...hand flown using raw data right on up to by means of a full capability four axis autopilot system.
That can bring you back to your desire to talk only of SAS/ATT.....is one mode better than the other for a raw data approach or while using an uncoupled FD?