I'd like to display i and e in the more traditional italic case rather than the double-letter font. It seems easy to change the display of complex i using
MakeBoxes[\[ImaginaryI], TraditionalForm] := eye
But the same technique doesn't work for exponential e:
MakeBoxes[\[ExponentialE], TradionalForm] := eee
Anyone know what is going on or techniqes for debugging this? Thanks.