I'm writing to give my point of view about a real commercial mistake for drafting, personnaly I could be playing all my free time in draft, but actually I don't need jokers anymore. As I got full collection of many sets oppening a pack is only giving 20 gems for the rare, while a pack have a value of 600 gems !!!!
Somehow with 90$ I can play 1 or 2 weeks depending results, and sometime less if I'm already mythic. All that to not earn nothing in fact that's just insane amount of money for gaming 2 weeks !!!
You should really consider something like exchanging jokers for draft tokens, or participating to drafts for lower costs without keeping cards or earning gems, just to try climbing ladder.
Thanks for considering this messgage