I have to admit, I can usually do without the daytime parades, (although the dance party parade at noon is a fun way to interact with some of the characters outside of the meet & greets).
BUT, the Main Street Electrical Parade is one of my FAVORITE Things at Disney...So It will be missed.
That said, a colleague of mine, who just moved from California, had heard that the Main Street Electrical Parade is actually being moved to Disneyland for a limited time. With a quick internet search, there seem to be some news reports to support this -- So Main Street may be leaving Florida, but its moving to California.
I also have a feeling as fall and winter approaches, that with Mickey's Halloween and Christmas Parties... that Disney may be thinking that ~Holiday~ Evening Parades will take the place of the Electrical Parade. I've never been to the Halloween party, but I seem to recall the Evening Christmas Parade being lighted, but still distinctly different from the Main street floats and parade.
One can only hope that Disney is just "switching things up" since it also plans to end Paint the Night at Disneyland this fall.... Hopefully, they'll give the Florida park fans a taste of the new show.