SE add something harder for people that enjoy challenges and then your avarege player will decide that if the content is there and he is paying a sub then that piece of content should be for him too, then he will wipe and wipe and give up and soon enough he will come to the forums to claim SE cater to the non-lifer and it's destroying his enjoyment of the game he is paying the zomg budget-breaker $15/month.

No, challanges are not welcome. Would be sweet, but wouldn't last.