I understand your point, though some of what you say is a bit incorrect I think. Like for instance your comparison with weakening a monster until we know their tricks. Well, Delve captures that idea, and we use those tricks every fight, some of them are a near must. But at the same time, I have to say, these WK Reives are not the same way, it sounds like Yumcax is similar in the fact he has some kind of regen which can be broken by wind damage, but otherwise, not so much.

I understand your point overall that the players are ignoring it and it is our fault for such a thing, but I do not think we should have all blame in this matter. If Reives themselves were more enjoyable, rewarding, or just generally not such a big time taker which requires so many people, I think we would be ok, but none of those are the case sadly. So while we can take some blame, I think SE is partly to blame as well.