1. Please include changes within the Curve Editor to the global undo / redo system in Max
2. Please allow multiple curve handles to be manipulated simultaneously, e.g. multi-select curve handles to adjust the entire curve, or portion of the curve, at once.
More suggestions
hereI would also like to reiterate, personally, that the Corona Color Correct Curve Editor is the single most useful but most difficult to use feature among the Corona SME nodes. Please, please dedicate some development time to enhancing the usability of this feature.