Verfied Answer
How do I know who gave the "Microsoft Verified Answer" to a certain post? Why does the person who posed the question get access to "Microsoft Verified Answer?"
Forum Discussion
Great, such option is much better! The only point - why don't you allow author to unmark it? That could me marked in mistake or due to misunderstanding, whatever. IMHO, the author has to have rights to change his/her opinion without help of moderators. Same as with post - if you publish it in mistake you have an option to delete such post.
You can "unmark" a best answer. Click on the three dots in the right corner for the menu option (see screen grab).