Well, maybe the new algorithm interacts within the Amp-Block algos, what may be the reason, to move the parmeter to the Amp Block`s speaker tab. The downside of this paradigm change is giving a little bit up the "FOH = DI + Monitor = real Guitar Cabinet" parallel paradigm. Now you`ve to decide, if you want tweak to authenticy with IR (using speaker drive) or tweak for the real Cabinet (using no speaker drive).
And if the final Firmware will support the parameter > 0 per default, all the "real cabinet users" may have to jump into the advanced speaker tab and set back speaker drive to zero.
Would be a General setting help? Default Speaker Drive = 0 - YES/NO ? Or automatically set the parameter to zero, if Cab-Block is globally de-activated?!