People need to stop whining. You know what happened before we had the completely overpowered KjC? We would lose DPS when moving and you could mitigate the effect of movement by planning ahead (delaying Lifetaps, delaying instants to fit that movement). And sometimes specs would even be chosen because they excelled at movement heavy encounters (Demo on H-SpiritKings for example). KjC means that right now moving is a non issue for Warlocks, we don't have to plan ahead or react to it (in terms of rotation), we just move. People trying to argue that the movement speed penalty is a big issue in PVE are either deliberately trying to make KjC worse than it actually is or are not reacting quick enough. Yes, there might be abilities where you need to react a smidge quicker with KjC but those are the exception. Thinking about it only 3 abilities come to mind: Thunderstruck on HC Lei-Shen, Attenuation on HC Zor'Lok (although dodging this with KjC is entirely possible by dodging through lines instead of moving within an arm as far as I remember) and the fear thingie on HC Tsu'Long.
I vote for the complete removal of KjC, AV and MF and for them to give us a ressource generation Tier which we do not have at all. Not going to happen, but one can dream.
Oh and Fel Flame having a cast time (and being basically a greenish Scorch) is just meh.