Dave,
The other way to see this is that despite the disappointment in not being able to develop XH-59 further a new generation of engineers picked up the concept, dusted it off, realised the potential, then had the gumption to take that potential to full realisation. All we have to do is give them a pat on the back for being so bold.
Will X2 spawn a new generation of high speed helicopters? That depends on us.
We could nit pick and criticise those dedicated engineers or we could congratulate them. The purse holders will be looking to us "experts" to see whether this idea is worth further investment - i for one whole heartedly support the X2.
Mart