NVC's solution gives huge inflation and I think this would hurt YAC significantly more that it hurts NVC so be shouldn't go there.
It looks like somebody prefers to ignore a basic math for ideological purposes rather than do some research. I seen this many times during the years of USSR.OK, let's do some research...
1) The maximum proof-of-stake reward is 1 coin per coin*year, so even if reward and difficulty will be constant values, proof-of-stake is unable to introduce more than 100% increase of supply.
2) There are more than 650000 NVC generated, this means ~325% increase of supply for 8 months or ~487% for a year.
3) WHAAAT THE HELL IS THAT???!
How is it possible? An answer is quite simple, proof-of-work generation is much more powerful inflation source even with NVC block rewards. And it's significantly more powerful in YAC, just compare proof-of-work rewards and do some extrapolation before trying to deny that.
And remember that difficulty is growing while the reward is dropping...