I'm using the web interface remember?
TBH I'm still on the old GUI version as that offers more control in the lows, mids, presence, and highs sections as well as the attack/release speeds.
But the new GUI can show the errors in the web interface, so I can report back once I upgrade.
What exactly does the old GUI offer that the new GUI doesn't? Isn't all this just under the Quick-Adjust Texture cell once you expand it? The limits are -6 to +6 db, is this too constrained for your requirements?
AFAIK the rest of Quick-Adjust is under Texture and Loudness once expanded. The Deep Bass Synthesis section is the only section with different range limits, as far as I can tell.
If it's not right, post the issue in the new GUI thread until it's addressed. And if it's still not plausible, then it's time to brainstorm a new solution. Remember the Processing Overview popup is not set in stone and they're looking for more input as to what it should include.