I absolutely love Ektachrome as it is.
I don't know that I can explain why this is, but the times I've sent it to a lab (any lab), it has come back with the oft-complained-about blue cast, especially in the shadows. The times I've developed it myself (either using a 3-bath E6 kit I bought from the FPP, or using an "E6(-)" type process with strong HC-110 as the first developer, then light fogging, and ECN-2 chemistry to process the rest of the way), it has come out with really excellent color balance and a distinct lack of blue shadows.
But if I wasn't happy with the blue cast, honestly I'd just shoot it through my 81A. Don't really see the need for a warmer version of the film.
And with all that said, if for some reason Kodak released a warmer version of Ektachrome, I wouldn't hesitate to buy some and try it out haha.