Then I would only want to see that one, in place of this one.
We don't need 2 Scarecrows.
And as others have said, If I had a Scarecrow that came with a Murphy head, I still would only display him with the mask. It's like Two Face - how many people would choose to display him with the Harvey head over the Two Face head?
Well, it's worked for them with Joker, so they might do the same for Scarecrow, seeing as they could extend the representation of the character to more than one figure, especially if they're holding out on the CM HS for this exclusive release.
Might suck for us who are going to get this set, but if they do release another SC figure, I'll be sure to get that and display nit with the CM HS.
As for a DX SC, I don't see that happening. A Keaton Batman is more plausible for that line and might be released there instead of in the MMS line much like the CR Superman.