The Hunting Xp boost past 75 is good, I imagine the drop rate is Ok, I wouldn't know, as the only areas it is possible to hunt in and still get ok xp is in the attribute zones that don't drop anything.
If you really want to know where the areas that need improvement are, log into game and take a look, there is no-one in devils island, toi is next to empty and these are ment to be mid 70 solo hunting zones, I went in with good support and a front room mob hit me for 5k, 4 and 5x hp mobs don't need to hit for 4 and 5 times what they normally would, and I think that, and the really crappie drops are hurting this game, giants cave is a joke, at 78 as I am now, I should be looking at giants cave as a place to hunt, but all the high areas have these issues, either mobs you can kill that wont drop anything, or mobs that you can take 1 v 1 unless they crit you.
this has been reported by loads of others, loads of times, with a lot of players unable to farm the gear needed for s grade, its unlikely we will be able to successfully hunt in most areas
if your new craft system, make gems a and s easier to get hold of, as well as cloth, magic tablets and any other needed parts. your still will suffer unless you reduce the attack power of the high area mobs