I found in my manual only two other items engaged at 2000ft RA nothing about the thrust mode display.
The A/T go-around is available below 2000ft RA if the A/T-switch is in ARM, with or without AFDS engaged.
And manual F/D go-around is available if below 2000ft RA and not in takeoff mode.
The Auto-popup feature is available below 2000ft RA as well (both F/Ds off, just hit the TOGA-button and you have a F/D guidance for go-around).
(All mentioned is for the 737-31S)
[ 04 November 2001: Message edited by: Denti ]