I'd say 1/2 the WB locations so far were impossible, or nearly so, to drag to within 70m of the rez pad. Also expect, if ppl try to kite a boss to the rez pad now, the griefers will react with equal and opposite force and work to kite it elsewhere. I believe the 2nd part of the patch notes statement simply means you will never get a Slayers chest unless you are within 30m when it dies. Whether it means there is now a 100% chance of a Slayers chest if you are that close when it dies needs to be clarified. I mean, "chance at one of the guaranteed" is bad english, shouldn't have "chance" and guaranteed" like that in the same sentence. Net result should be more ppl on boss all thru fight and a lot less rez pad camping. Overall an improvement in World Boss loot mechanics, in my opinion.