I would love to see Ancestry.com find a better way to update marriage records when there are multiple marriages. I may have a man with 3 marriages, with wives who were married multiple times, etc.
When I am matching up with vital records, sometimes the record updates the right mate/date, and sometimes it doesn't.
In those cases where they go to the wrong person, I have to go through each marriage record matched for each person, and manually correct the citation, then un-flag and re-flag the right person(s).
The changes that were made to give us the choices of a match to spouse/children when updating from other trees a while back seems like the type of logic that we could use for marriages to help select the right one(s).
Thanks for your consideration :)