I hardly ever post on the forums- never complain- yet I've been so frustrated with this "Legendary" quest line that I came here to do just that, only to see that there's already a thread up. I decided to shift my focus from my Mage to my DK a bit before 5.2 and was excited at the prospects of being able to gear it quickly thanks to the increased loot drop rates. However, much to my chagrin, I realized that I'd have to keep running MSV after gaining the item level necessary for not only HoF/ToES, but ToT as well. Now, there's absolutely nothing I need from MSV, as the increased drop chances combined with the copious amounts of Elder Charms available meant that I received my upgrades in a flurry; I'm simply running it because I need sigils. Waiting around in a queue as DPS is already a great displeasure, and to have to run 3 older raids that no longer have loot I need from them, only to continuously be met with no sigils, is painfully frustrating and devoid of all fun.
Then, today, I receive a Sigil of Wisdom from MSV when I already have over 10 and am strictly running it for Sigils of Power. I understand why blizzard initially made this change, because my mage was indeed one of those who spent the first weeks doing only MSV and needed wisdoms. However, now, with the increased loot chances, myself and all others will most likely only need a week or two of MSV at max. Barring extremely favorable RNG, it's unlikely that you'll attain the necessary amount of sigils in that time frame.
The most disheartening part of all this is that I'm trying to complete a very early step in the whole quest line. After this portion, I'll reach another gate where I have to spend 6 weeks of capping valor in order to proceed and probably be forced to run ToT in 5.4 just to completely catch-up. The kicker is that I'll hit exalted with the Black Prince reputation either today or tomorrow. What happens if I decide I want to join a raiding guild? Am I to be forced to write: "Sorry guys, but I'm months behind in my legendary quest-line and as such, will be a detriment to your raid. Not only will I be missing the extra gem slot in my weapons, but I won't have my legendary meta gem to help for this content cycle." I would honestly understand not being accepted or being benched because of that.
TL;DR: Make the sigils 100% drop-rate in LFR for the sanity of those starting late or allow us to trade one sigil for the other at a vendor. Perhaps create a catch-up mechanism based on your Black Prince reputation? Or go to an extreme and make the quest have account-wide progress. I realize that legendary items are not supposed to be some easy feat, but I'd like to use one that is relevant to the content I'm currently trying to conquer before the next tier comes out.