Thanks for the pics, horn1004 !
It's a good concept. Those of us who mulch "exclusively" could benefit from this deck in wet conditions, for then we could 'let 'er fly!' and if necessary mulch on the double cut.
My concerns are (1) does the MOD mulch as well as a regular 7 Iron with a mulch kit installed, (2) does it need cleaning (scraping) - one of the <i>amazing</i> features of the 7 Iron is it's propensity to stay clean.
Is JD looking for a 'test' guinea pig?

If this deck won't perform, will a regular 7 Iron fit the mower/frame?