I do recall that they changed the claim system awhile back in response mostly to HNM claimers who would simply claim and kite until the rest of the LS showed for the kill, but I don't recall the specifics of the change, except I think that's when rage was implemented. At the time I solo'd almost exclusively on beast, and the only interest I had in HNM was behemoth hides since my main craft is leather; because of the monopolizing HNMLS's and how much they QQ when someone takes "their" mob it simply wasn't worth the aggravation of having to /blist an entire LS after I took initial claim so I stopped doing them with my social shells. They've been good enough to add much easier alternatives to behemoth materials at those levels so I don't even care about that. Also, since I did solo beast for almost my entire career I have enough KS to fight behemoths pretty much any time I feel like it.
In any event, that shows that SE is willing to fix some of the "wtf?" elements in the system. No matter how you feel about it, we all must admit there are plenty of things about it that make you go "huh?" For me it's DoT, if I'm taking damage, and I know who did it I will remain pissed at them, also some of the debuffs. This really isn't that much of an issue if they do revise it to make it realistic, most level-appropriate NMs have such high resistance to anything that even with top skill that DoT is gonna wear very fast, unlike how it acts when landed on us... Some of the debuffs should also spark hate, while they are active. How pissed do you get when para lands on you? Is there any reason to think a mob wouldn't feel the same way?
As to giving a claim away, there's really only 3 ways to do it: 1. die-death settles alot of scores, and noone is advocating getting up and still having hate established; 2. run through water-stuff that tracks by scent loses the scent this way, and eventually gives up if it can't see/hear you as well, deodorize works if you are far enough away that it can't still see/hear, thief has hide; 3. zone/flux since your bod basically disappears from the face of the earth for a time, again it can't track. A reset button won't work, whatever you did to piss it off, you still did it, and it should still be pissed, at everyone that's taken an action on it or healed someone that did..