SCE/CoE (SCoE?) remains one of my favourite series, so I will always want to see it come back.
There's still more Klingon Empire stories to be told; we've had a glimpse of how things end up thanks to Destiny (as we did with CoE, in fact), but there's still more I'd like to see.
As much as I love NF and will miss it, I think it's pretty much concluded. Anything more would feel almost like a re-launch.