So I finally managed to get my second character to max level yesterday, slightly more than 3 weeks following the release of MoP. Obviously a much slower pace than I was on following the release of Cataclysm, but this clearly has as much to do with the prevalence of dailies at max level in MoP rather than any real difference in leveling speed.
The final played time to 90 for the Death Knight (from 85) was 23 hours, or about 5 hours faster than my first character (typically because of less competition for quest mobs). Interestingly enough, this was also about 2 hours slower than it took from 80-85 on the Death Knight, but that may very well be because I also leveled both of this professions to max concurrently this time around.
I also managed to hit revered with Golden Lotus on my warlock yesterday which now unlocks two whole new sets of dailies with Shado-Pan and August Celestials. I haven't yet finished up Tillers or Cloud Serpents, so I expect its going to add a significant chunk of time to my dailies regimen, which currently takes around 2 hours and 15 minutes.
Today will be the first time doing the full set, so I'll try to provide an update here later on the total time investment.
Note that I could theoretically stop doing Golden Lotus at this point, which is the most time consuming of all them, because having reached revered, I've unlocked all of their valor point gear (none of which I actually need anyway) as well as the other two factions. However, I'll probably keep going in the interest of getting the mounts and achievements and the epic piece that comes as a quest reward at the end.
The hunter is up next.