The Block Element functionality carried over from Chrome is simplistic and unrefined compared to what Element Hiding Helper - whose selection method was derived from Aardvark - was capable of doing. There isn't even annotation of the details of the element currently selected.
Further, this carries over none of the rules from Element Hiding Helper. I've accumulated many hundreds of EHH rules over my years of using it, and now that effort is tossed in the grinder along with Element Hiding Helper? "Block Element" is not at all a comparable substitute for Element Hiding Helper. Instead of dumbing that feature down to the point of uselessness, how about stepping-up your game and delivering something that goes beyond what even EHH could accomplish?