I am not seeing any spectaculair at all, and its ok if you like the concept.
But i really do not agree with you that they are able to build anything powerfull enough to make me game on a nuc.
Second i am pretty sure the prices will be like alot of times higher, for again low/medium performance small factor pc.
Many people i know started building a htpc based on the amd nano with a mini itx board, which does run games pretty well.
And probably will be a lot cheaper, because again i expect a premium price tag on this new nuc models