Hmmm, bigger immediate issue if this becomes a common technology is the congestion it will cause on wifi in multi-station environments that are closely located (apartments, track homes, etc). Even single stations will have issue if more than one user is sending traffic.
In general, I think the best use of this kind of technology is business, mainly all those "consultants" that come on site to do their powerpoint presentations. Having it easier to access a projector has it's benefits, and the lag is not a big deal in that case.
In any case, I don't find Intel's solution that awe inspiring, other than getting manufactures to include it natively.