That problem (or potential for it) could easily be remedied by having an auxillary throttle for the motors instead of routing it to the engine throttles (probably what they're doing anyway).
We already have too many "stupid pilot checklists" being forced upon crews don't need another 5 because somebody forgot that you need the engines on to take off.
...but as I understand, you shouldn't really be taxiing above 25 kts anyway.
Why the
not... I'm taxiing to get out of an airport, not take a scenic drive.