OT-Editing in RAM for FCP -is this ever going to be on the horizon?

Wouldn't it be cool if all the footage for a shot could be loaded from RAID to RAM and then edited
in superfast RAM, and when done you kick the edit back to Hard Drive.

Imagine a 16 core mac with say 64G of Ram with a Ramdisk option, even in ProRes edit mode,
64G would hold quite a few minutes of footage.

Maybe its a pipedream, but its a thought for the future for FCP!

Why? Final Cut's whole architecture is built around real-time playback from disk storage. You can do what you're describing right now.

RAM preview is a function in After Effects because After Effects was never designed to be a real-time system. You can drop a freakin' DV clip onto an otherwise empty After Effects timeline and it won't play back in realtime unless you RAM-preview it. That's just how the application works.

But Final Cut is already a real-time system. What would be the advantage of caching frames in RAM?