Can't I just Invert a 1.5" to 3" TC reducer and use my standard Chronical lid for the new 3" TC Accessories?

No, unfortunately, accessories such as the blow-off cane, CIP spray ball, and others include a PRV or space restrictions that require the additional interior space the new 3" TC lid provides.  In turn, an inverted reducer will not suffice to add our new 3" TC accessories to an original 1.5" TC Chronical lid.