You asked for suggestions, so here goes...
I don't know about the new CANBUS ECMs, but a trick to eliminate decel pop is to richen up the main lambda table first column by 5% at a time in the RPM cells where the decel pop is occurring, until the decel pop goes away.
This approach is discussed in the TTS Tuning Guide. I think it's a better approach then messing too much with the Decel Enleanment table, because DE mode is only effective for a short time, whereas the main lambda table is always effective. Even if you decel hard and long, changes to the main lambda table first column will be effective for as long as you decel.
After we tuned my bike with the Dragula and the SE 259e cams, I had to richen up my main lambda table first column by 15% between 1750 and 3000 RPM to eliminate my decel popping. It still pops on occasion, and it really didn't like running down at sea level on a recent trip to Panama City Beach. Popped like crazy down there, but runs fine up here in North Georgia!
Ken