I think the issue with the ‘Rare Mob System’ comes down to the fact that the mobs are indeed not rare and are on a (very) fast timer quite often. This was also the case with Zereth Mortis, of which I enjoyed but I think could be shaken up a bit (Rare Mob System) instead of the usual circuit, or removed from end-game zones altogether in favor of something new.
Not speaking as a collector because this I am not, but just as player. It would be nice to have the system switched up and to respect the word ‘rare’.
I suggested putting rare mob hunting in the revamped world because it would require players to explore non-max level zones to enjoy the benefits of rare drops, and allow the mobs to feel more rare and other regions more alive minus 1-2 of the latest end-game maps. I would also envision a longer timer to keep that rarity feeling that is lacking.
Edit: To expand on my thoughts; both you and I were pinged here.