Unfortunately, there is no single AoA for a pilot to remember. For a useful display of 'AoA' for a pilot you'd have to provide some kind of normalisation to account for configuration, Mach number, altitude, load factor, all of which CAN affect stall or similar behaviour.
To a reasonable extent thats what the 'low speed cue' and 'green line' on airspeed tape aircraft displays - speed adjusted for AoA and config, which is much the same as AoA adjusted for speed and config - but even these can present misleading info and there's no practical way to make them perfect.