That's the thing that needs to be included in any decision, How far away is it until the majority of titles are pushing DX12 or Vulkan because chances are there'll be another gpu upgrade between now and then for many of us.
This sort of lacklustre release really does bring AMD's short to mid term gpu future into question for me, They're clearly unable to compete with mid or high end and they appear to have nothing great on offer where they have released cards so how long will it be until they can get there act together and offer compelling products again?
Looking at how long the majority hold on to there GPUs in this price segment there will be plenty of DX12 or Vulkan games before they want to replace there GPUs.
http://forums.anandtech.com/showthread.php?t=2480979