My thoughts on the matter:
It seems that the home team would like to play at 7:00pm or 7:30pm. That's fine, it just means that there is some variance. If you're on the west coast and watching an eastern conference team, you'll have to bail work around 4:00pm. If you're on the east coast and want to watch a west coast game, be prepared to stay up until 10:30. This is not a new thing.
The problem with the playoffs past--especially in the 1st round was that once the NHL went national broadcast for all of the games, they only had so many channels they could air them on NHLN, Vs, CNBC, and just recently USA (which ironically the canadian teams played on). With so many games going into OT (thank parity), it used to be one team was screwed if they were out west--you'd have to wait for a who-cares game out east to finish before you got to watch your team. At least this year they were a little bit better by showing the start of a game screwed by OT in another on NHLN, but it's still not ideal--especially if you want to record it.
I think that's why they put the Western games much later--specifically the central matchup more in-line with mountain time or pacific time--more time for then Eastern game to finish.
Personally, I think what the NHL should do is use the 4 networks to effect: even in the 1st round only 4 games will happen on any given day, and instead of doubling up games on a network, just assign 2 series to a network (each on opposite days) and have them start 7:00 or 7:30 home team time. Once the 1st round is over either eliminate 2 networks or each network has a series, they just skip a day. For the conference finals, throw everything on Vs. or NBC. For the Stanley Cup finals, I'd say throw everything on NBC and screw those who want to watch the latest relaity TV show du jure, but that's just me
. Likley it will be Vs weeknuing and NBC weekends.
P.S. Yes, I still call it Vs. I occassionaly call it OLN. Deal with it. You don't see me calling it the Willis Tower, do you? Of course not. That's as wrong as Bea Arthur Porn.