I know there is a big discussion going on about the need to do dailies in order to itemize for raiding etc. - that's not one of my concerns, mostly because I loved the dailies and already finished them for my main character. I am exalted with every MoP faction that's currently available. I raid every week and despite having a few setbacks in our raidgroup, we're quite solid with going Heroic Mogu now and Heart of Fear currently at Meljarak.
We got a quite balanced Setup and downed Elegon the first time 5 weeks ago. Both me as a Fury Warrior and our Frost DK hoped for a weapon from him. We both used bonus roll Tokens on Elegon that same Night - and every other kill afterwards (a total of 5 Kills now on Normal Mode) - we also down Elegon LFR every week for a chance at a weapon upgrade - and we also used a golden coin there, too.
Now that makes 10 normal mode chances at a weapon upgrade from charms and 12 LFR mode chances for us two. We got a single Weapon (2H from LFR the first Time I went there).
Now I know the concept of RNG and sometimes you just don't get the luck you need - BUT there is no other way for us to improve on those slots.
Casters can at least get 476 Upgrades from Inscription. Rogues, Meele Shamans, DualWield Monks do have the chance at a dagger from Stone Guard and/or a Fist weapon from Gara'Jal, which means double the chance at a weapon that's better than Heroic Dungeon Gear. Feral Druids and 2H Monks can also get a Inscription 476 staff.
Now since the 476 2H Sword from Elegon in my first LFR kill, I haven't gotten a single weapon upgrade in 6 Weeks. My other Items are pretty much maxed out for normal mode and I keep falling back behind in our group in terms of damage - same goes for our Frost DK. Basically RNG is holding our group back from progressing faster, because we're having a hard time with enrage timers on Garalon or Meljarak right now - it's close, but it's a factor.
Why is there no other option for Strength based Meele DPS to get a weapon upgrade rather than one single boss (I do NOT count the 0.3% chance for the 2h from Weaponmaster in Mogu Palace HC)? I'm a blacksmith and I would certainly be willing to pay tons of gold for the possibility to craft a 476 weapon at least - why not make it accountwide as the Inscription Staves?
Now I know Blizz won't change things now - but maybe they'll improve their itemization for future Raids, so people get a chance to actually not be hindered by a clearly flawed system. RNG is part of the game and is clearly valuable to some point - but when RNG is too huge a factor it certainly kills some of the fun. Strength based WeaponDPS for Warriors and Frost DKs is hugely affecting overall DPS output - it's probably the most important slot you have.
Having ALL possible improvements drop solely from a single boss is simply bad design and will hopefully lead to some change where you get different ways to improve on this slot if RNG hates you.