The need for a speedbrake/ground spoiler below 72kts?
Next time in the sim ask the TRE to give you an engine failure below 72 kts on a wet runway with the crosswind from the wrong side - very interesting situation. Nosewheel tiller is your last line of defence!
You still got manual braking and the antiskid... I don't see how it would be less or more interesting that if you still got autobrake down at that speed. Btw, try it on a 737 too and see if you get autobrakes...
Spoiler and autobrake logic has been implicated in a number of accidents/incidents? On the 320?
Boeing autoground spoiler on RTO only works up to 60kts... and the autobrakes are active above 60kts but won't initiate unless you initiate reject with wheelspin of 90kts or more...
So, I don't see the major difference here in the "logic" on an RTO... except that you can't manually deploy the ground spoilers... then again, do you need ground spoilers for an RTO at <73 knots?
PK-KAR