Will the new Canvas Slice ship HUD allow players to see the HUDs and MFDs of other crew members on a ship? Right now, other players appear to just be looking at blank or placeholder screens that don't reflect the status of the ship.

Yeah, you should be able to see the HUD, because that is a new system done with Building Blocks. You won't be able to see the MFDs because they are still Flash/Scaleform based. So they are turned off intentionally as a performance compromise. When they are converted to Building Blocks, then we'll look at turning them back on again. They might still cut out at a distance just for optimization reasons. But I'd imagine when they're the new Building Blocks-based ones, you'll be able to see not only them, but also be able to use them from a third-person perspective.