Well seems that as soon as this 3rd party thing is ready it will be implemented in NS4 with a timer between hipsings.
As far a spaming it goes, i really do not have a problem with it any more since the "oh look im crashing again from the hips spammer" thing is fixed. But yes they are annoying because a heck of a lot of toons have neither spot nor listen and you basically die.
There are many things like this in this game. As far as hips vs spot or listen and how much hide you can get on items vs spot etc, I loved the old days when Shadowdancers fell like they had been shot - dragons had true true sight

or that guy (i forget now) and his awesome epic DR 3 truesight rak shape raiding LA.
Still as ppl always say, nothing is unbeatable and everything has some weak point. It is silly to build 1 cahracter and expect it to be able to beat everyone elses no matter which builds ALL of the time. I have had some success with my lvl 35 barbarian roar nocking SD's out of hips while i smash them to death very fast, he has 0 spot and 0 listen. There are ways around almost everything - except lvl 40 blinding speed dragons

lol jokes