I guess my main thinking is that I will generally refresh my gpu(s) 18 months - 2 years whereas monitors are a more of a 5 +years refresh cycle, that in mind will 1440p in 5 years will be where 1080p is now i.e. the minimum standard, and presumably 4k displays will have the hardware gpu wise to make it as easy to run as 1080p is now. Also if my understanding is right Display port 1.3 also brings 120 Hz refresh to the table but I am not sure when that is likely to become widely available in monitors.
I want to be able to see how it runs on my system to know that I could go 4k now then bring the rest of the system up and progressively improve the frame rate.
Arrrghhh its infuriating!!!