This thread has all the information you’d want.
5-6 bosses isn’t very many. In order to get The Predatory Blade and some armor, I had to kill around 50 bosses, during which I got around 10 miscellaneous legendary items.
It’s a complete grind if you’re going for something specific, mainly just waiting for respawn timers and dodging skeletons (once you have a couple of key items you need to farm the place).
Also, the RNG on the scroll/fragment recipes needs to change drastically. After 50 or so turn-ins, I ended up with 10 venom war axe recipes, 15 “dead legs”, and after that mostly venom swords trying for a single kiln recipe.
I know you can trade them to other players and whatnot, but it’s just TOO random to be a good mechanic.