Full heroic dungeon gear is enough to get you into both Raid Finder and normal Vaults.
The dailies are there to reward those who put the extra time and effort by allowing Valor Points gear and Greater Charms of Good Fortune for extra rolls on loot when you actually do raid.
All in all, the dailies aren't required. You can cope in LFR and normal MV just fine without bonus rolls or valor gear. Sure they help, but if you want that extra boost, then do the dailies.
On another note, it would be interesting if they combined the the Mists daily style with Wrath and Cataclysm.
What I mean by this is having a daily cap on your reputations where you can get reputation through multiple methods, but still have a limit on the reputation you can earn daily.
To fill this cap, you can either do dailies where you'll be rewarded with Lesser Charms and gold, or you can wear a tabard representing the reputation and run heroics.
Everyone wins in this case.
Hate doing dailies? Run heroics for the grind and lose out on Lesser Charms.
The option for doing dailies and obtaining the bonus rolls will always be there, but not forced.
In my opinion, I think Blizzard did a great job on the daily system for Mists.
The zones are nice, the dailies alternate and for the most part aren't that bad to do.
Just my two cents.