What is the need to continue doing apexis if you have the gear and mount, etc. Do you think they will continue to add things to be bought with apexis?
There's no reason to think they'll add more, unless they do something along the lines of adding mythic gear so people can prep for Legion, then increase the apexis droprate, something like that. Having said that, it's anecdotal evidence, but it seems the majority of people commenting hate Tanaan, so apexis rewards should be a thing of the past.