That situation was also possible before. Melee profs can and have killed kiters all through the history of AO. Its anoying to be kited, but its not a certain death situation. With the root and snare changes, the rooter wont be able to spam roots anymore, so that will lessen the anoyance. Ranged profs cant attack while running, so if the kiter does nothing but root and run, he will most likely not be able to kill the melee profs anyway. He has to stand still to be able to unleash his full attack fast enough. Most melee profs have great defenses and healing and are hard to kill as they should be. Kiting professions do not.
Using the fixer as an example of an extremely anoying kiter, since he has great defenses and healing capabilities. Even though they were using their kiting abilities and runspeed to the fullest, I have still seen them killed by enfs, ma's, melee advs and keepers. This was fixers who were kiting AND fighting. Ofcourse setup plays a role, but if you are faced with a superior opponent, then you will loose whether you are ranged or melee. And then kiting is only a small part of why you loose.