I've since discovered reproducing acoustic piezo signals via the Kemper isn't really the best approach.
I didn't mention this before. but one of my goals here is to consolidate my stage footprint some by eliminating the acoustic amp out the equation and delivering acoustic tones by other means. But that aside...
Sorry to say, I now believe I've been "barking up the wrong tree" with an acoustic profile approach.
This is not to say this can't be done, there are simply better ways to achieve these sonic results.
I now see the resolution being connection vs. any profiling condition.
Rather than taxing the Kemper profile to deliver these tones, there is much to said about driving an active piezo pickup via an isolated signal to a powered speaker, thereby allowing the Kemper to do what is does best.
Approach: Since powered speakers can handle multiple channels, leveraging a high quality DI dedicated to acoustics using a separate channel of the DXR10 has merit. The other channel dedicated to Kemper electronics.
"Y" cabled from the guitar, this approach better provides the mix/separation/isolation characteristics I'm after, still maintaining control at the guitar level and moreover reducing/simplifying stage equipment footprint.
Regardless of which quality DI is implemented, an isolated wired approach (at least for me) offers more stage flexibility than any acoustic profile summoned via the Kemper. Nothing implied against Kemper here in any way!
Some of the DI contenders I'm currently looking into are:
Fishman Aura 16, LR Braggs Para Acoustic
Some too like the Fishman Aura Spectrum, but that unit seems to have more than what I need for my purposes.
YRMV