too slow , considering the meta

Nice additions pal , but have you considered to add Countess Ashmore instead of Mossy Horror cause Countess Ashmore draws you 3 cards and Mossy mayde won’t be so good at the new meta . Or you could add Da Undatakah cause its synergies very good with the deck .

Where is the legendary weapon?

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Maybe Jaraxxus is not a good choice for this deck … but against some match ups like priest is a perfect win condition and priest will be tier in the upcoming meta . This deck can’t run Bloodreaver Gul’dan cause it only brings back Despicable Dreadlord and Hooked Reaver as a 4-4 without taunt and the deck idea is a more tempo based playstyle . Maybe instead of Jaraxxus you can put Alexstarzsa as a tempo 9 mana play to your opponents face and finish him or as a heal option versus aggro decks that may appear in the meta . As you said and maybe you are right ” I feel like there is much potential in this list, but it needs more support as I feel like there are much better versions of Warlock decklists that achieve similar goals in a much better fashion ” i thought about this deck as counter to Cubelock (Maybe i can cut Farseer and put Spellbreaker instead) and i belive it could be stronger than Cubelock because it can support a more tempo midrange playstyle .

This a midrange aggro deck . There is no point adding lay on hands in this type of deck . Also the deck contains countess ashmore which draws at least two cards

If the meta is too slow probably quest rogue could see some play …. and i am thinking , is this a good tool for quest rogue ?

Blizzard nerfed the most skilled deck at the un’goro launch…….primordial glygh , stonehill defender still unerfed …..ONCE AGAIN THEY PROVE THAT THEY ARE NOT INTRESTED ABOUT THE COMPETITIVE SCENE
Hearthstone is becoming more and more Casualstone…..