I'd venture to guess the Kings will honor Blake with one of there MacDonald's LEGENDS Nights maybe as early as next season ... and they will then gauge the level of acceptance to Blake from that before they consider adding his # to the Rafters/Wall. As more time passes, fewer people will be opposed to it happening, so eventually Blake's #4 will be up there, like it or not ... it's obvious Luc is still his friend and Lombardi still wants to build that Red-Wing-esque Culture here in LA, so that means History, Stats and friendships within the organization will overrule a handful of fans that dislike it.
As for the OP's question ... too early to tell, but all signs point to QUICK, BROWN, KOPITAR and DOUGHTY going up as long as they continue to do what they do for the Kings for another few years ... IF they could pull off winning another cup I'd consider it a slam dunk ! Otherwise down the road, all four are home grown kids that have/or may set records as a King, and Won a Cup ... only a matter of time and more seasoning(s), to use a pun.