I highly doubt that. I think they would spread them out to meet-and-greet characters, diverting their money elsewhere. Besides, with all the new character meet-and-greet opportunities to being to MK with the addition of the Town Square Theater and the Fantasyland expansion, diverting the budgets into those would be the smart thing to do.
And if they won't hire more performers, then they'll have to make use of what they have. And cutting MiSiCi is the only decent option.
There's no correlation at all to suggest that cutting a parade would result in an increase in the M&Gs, with or without rarely-seen characters. That's simply your assumption....
And calling someone heartless because they disagree with is more of a projection than an insult to them.....