What happened to the original Main Street Electrical Parade that ran at WDW's Magic Kingdom that ran there until sometime in the late 90's and is there any hope of it returning to the MK in the future?
Current coaster count: 155
100th coaster: Phantom's Revenge at Kennywood
150th coaster: Intimidator at Carowinds
last new park addition: Fun Spot America
The one that ran in the late 90's was not WDW's original main street electrical parade, it was Disneyland's brought over after Light Magic debuted there, and was the same one as is currently there today.
The original WDW electrical parade was sent to Paris after being replaced by SpectroMagic in [91/92]. They ran it for some years, then started running Fantillusion brought from tokyo. The floats were slated to be sent to Hong Kong Disneyland, but were determined to be in too much disrepair so were stripped down and sunk to the bottom of the ocean.
A third "original" main street electrical parade was created in Tokyo Disneyland. No clue what happened to their floats I assume they were destroyed once Fantillusion was created. And now of course they have dreamlights.