I believe that if conflagrate always critted we could save some dps while moving. The reason I believe this is the fact that we will lose dps on the move because of the nerf of KJC. Now I also know the cons of having conflagrate always crit, it would be like WOTLK Ulduar when locks burst were so insane that many locks died because of aggro. It would also be a problem in pvp because of the same reasons but there are many burst classes that are already in pvp so one more wouldn't hurt.
I read on another forum that blizzard is giving us a 15% buff to chaosbolt but I am not sure if it is true or not. Here is my take on if that were to happen. A 15% buff is cool and all but without the ember regen from ROF, we still lose the maximum amount of CBs. To fix this there should be a cast reduction on chaosbolt or simply take away the embers and put in place a molten core proc for soulfire but instead for chaosbolt like it was back in the WOTLK hybrid spec. Though I am not really happy with the 15% "buff" it still is a move in the right direction and shows that they want to fix destro. The main problem for them is trying to balance it for pvp, but with that said, destro is already nerfed in pvp because of the simple fact of KJC being nerfed. How can one cast chaosbolt without moving if the enemy is attacking him/her while the lock has remain still in order to cast. Less Chaosbolts in pvp and pve doesn't seem as if it is the best thing for the destruction spec.