For PVP affliction will still be fine and have R1 viable comps but will be more idiot proof to play for beginners. Destro will be basically the same as it is now as long as the burst is comparable with the exception of missing Fel flame "which is huge actually". Demo could actually work but having shadow bolt have the same cast time as chaos bolt but with half the damage makes the spec useless in caster form. A 2 second base cast would fix that but they have no plans for such a thing. Leads me to believe they haven't tested Demo much in a pvp setting.
All in all losing Fel flame seems to be the main problem for lock pvp in general it seems. Well from my observation at least. So dark days could be a real thing. From a pvp perspective that is.