Yes,I think musing should create support center because the newbies who are joining in musing they have so much querry and problem so to solve there should be a support centre but musing have a feedback option in which people can ask question and they will give you response in less time.
If we have any problem related to the blog we can discord the blog with comment and the steem community with resolve the problem as soon as possible.for new user I believe support centre should needed.but if we think for earning there should not be support centre because if there is support centre then we will get less upvotes and the earning goes down due to musing has to pay some money to support centre also.