I feel like they should give the A and especially S rank hunts a TON more health, to compensate for player gear at this stage.

I think it would help give arriving players a bit more time to load-in, but aside from that, it doesn't feel right to me that an S rank hunt is down in 10 seconds. There's nothing really epic about that - the strongest and most elusive monsters in the world are essentially loot piñatas? While that's cool from a certain perspective... it's still kind of cheap, and lame, imo.