Maybe it would be a nice future to give to all accounts the option to VOTE on how much a fair salary for witness should be and in real time apply the rules.... the salary would dynamically change depended from current circumstances (market cap, needed infrastructure,mass adoption,TRUST etc...)

PS @cryptoctopus don't forget that witnesses get paid for more things...

1.they curate (redistribution of power)
2.they flag content
3.They are TRUSTED (no motivation for "bad actors" if they are paid good )
4.They take decisions for hardforks etc.
5.They are influencing the core developers about the project roadmap
6.They pay for IT security and infrastructure (not much now but the numbers will increase exponential)
7.for the risk they have taken to get paid in future !!! (SP) the most good paid witnesses have made updates day and night when STEEM was not even on exchanges...

PS The rise of the marketcap was too sharp and until the last week the liquid steem (1/104) that earned every witness was not so significant compared to now... I am sure if the price stabilizes most witnesses will significant increase the budget that they will use to contribute to steemit further ... the witness pay can change significant both ways... It is too early to judge witnesses on what they have contributed taking into account what they will potentially get paid in the future since they are paid in 2 years steem power... Judge them for the contribution they have done taking into account the weekly POWERED DOWN funds.... I have for example never Powered Down and have not pocketed a single STEEM for my witness work until now!