The answer is what someone already said, make a ability like deus ex. That was very smart. let them call beast every min but the pet only has 10% hp or something, they have to rely on stay or reward to fill it. This stops bst from soloing anything but allows them not to be gimped for long period of times.

But as usual, SE fails to see the simple solution when they actually design the solution already, even if it was 4 years too late.

Now for the cost. Jugs should not cost 120k a stack, npcs should sell all jugs at a set price. This keeps crafters in line and not exploiting bsts. If the items are too expensive because people dont farm, because people don't anymore, at least you can buy a stack of dipper for 50k off an npc.