UA is against alerts and will probably sue KVS, or at least threaten to do so, if such functionality is added.
Currently, for award/upgrade availability, KVS basically just works by automating a .bomb search for you, and putting it in a more convenient format. But KVS doesn't offer automation or anything that gives its users an actual "leg up" vs. non-users when redeeming award availability. And from what I heard/read online, it was the "advantage" provided by EF alerts which got the airline(s) pissed at EF. (or so they claimed?)