TBH I'm clearly not convinced by Hyperopia either, but I reckon a few people would like to improve their Sniping skills, so it's always a possibility. I know GC was heavily nerfed but 4ap MAY still be nice - it's another special arrow or skill or bow attack and when you manage to stay far from ennemies or put the tanks between you and them, it MAY give something nice. I think it's too big a gamble but a few people mentionned GC as a pretty powerful option despite the penalty =)
Thanks for the feedback on Elemental Ranger, though. I've been wondering what is was worth. I totally didn't know blood would trigger Tenebrium damage which sounds good !
Now what about Arrow Recovery? It sounds like a pretty nice choice too. I'm not sure it would be a priority but then again, taken too late in the game it may just be helpful anymore thanks to crafting.