No, this is not me who should create a 'privatized' MPA. A guy, who wants to change a contract terms should do this. When I bought an MPA issued by committee, I signed up for a certain terms (as many other users) and I am not happy when somebody mess them up.
yes, the smartcoin can be seen as a contract signed by different parties, however, it is designed as changable from its born.
committee can directly change some parameters like force settlement offset.
witnesses can publish the MCR and MSSR according to their judgement.
surely the change need strong consensus from the community.
as @abit has mentioned, while drafting BSIP42, the first choice to adjusting MCR dynamically, but because of some technical problem this is not feasible, adjusting feed price is the second choice, it is a little confusing but it works.
I know some users are not happy because of this change, but I believe this change will benefit the whole system.
reviewing what had happened to bitCNY in the past several months can help to think - because of the big premium and serious shortage, AEX and bigone removed bitCNY as a base trading currency.
it make no sense to say "keep bitUSD unchanged, create another", it is just the committee's responsibility to help the current smartcoins to evolve.
I also hope the big proxies to consider carefully on this issue, BSIP42 is not perfect, but it works, maybe we can consider another solution like fixing the MCR adjusting bug and then switch to the "dynamically adjusting MCR" way, but please let BSIP42 work before we can finish all the needed work to enable dynamic MCR.