Its the fallacy that, because things arent "perfect" this year the team should continue to rebuild in hopes that the situation becomes "perfect" in the future. Obviously theres no guarantee that happens.
The way i look at it is, we arent waiting for prospects anymore, every young player who will have a major impact on this window has already debuted. The team is also playing well and winning, but relying on a small group of elite stars to do it. Now is the time to sand down the edges of the roster and move out picks and prospects for NHL caliber depth to lengthen the roster.
You can always come up with a million reasons not to do something. Everyone is scared of Carolina but what if they lose in R1? You never know. I personally will be very happy with getting there and winning a round, but theres no reason they cant win it all with Igor playing this way. Cup teams win on the backs of their elite talent and the Rangers have that in spades.