That would be pretty cool to see. I remember there were some really promising demos with plasma when LED was in its infancy, but it looks like LED's surged while the plasma ideas remained mostly ideas.
The only thing with plasma is that the light will appear very yellow over a reef tank (6500k) so to get the ambient colours we tend to like for our tanks I think they will need a fair amount of blue to the side. But I bet the growth of corals (or plants for that matter) would be pretty impressive.
Currently only $10k pledged out of a $250k goal for this kickstarter campaign .. will this be going anywhere?
But if plasma does become available and viably priced consumer item ... I'd love to see that.