Totorok is a really good way to make seals, that being said it must be broken. And everything else is broken too.

decrease seals for leves
never allow us to choose what leve we want
decrease seals for caravan
descrease drop rate in dark hold
totorok should require 4 people to enter again

as is now, i wouldn't mind doing GC leves solo if receiving 10 seals for 15 mins of my life wasn't such an compliment to my humanity.

Please SE, make the adjustments.

i think 200 an hour should be what you aim for when considering balance, but thats my opinion.