If you move forward with a "longer pays better" system then there must be a penalty for those who "promise" longer power ups but power down early. those penalties should then be added to the reward pool or burnt or wtv

this system would introduce a whole new level of complexity to the system which might not be something the community can handle right now...

Maybe they should be grateful power downs are no longer 104 weeks and just focus on marketing and speculation. Pumping the price will bring goodness all around.