Please no. And that isn't due to the fact that I in general dislike the MU stories that have been done (most I have liked). But I am absolutely opposed to having them be not informative of our characters, Especially with having a limited run, I want to see our characters and what they experience, not other characters and what they experience.
I thought when ENT did this it was a massive insult to the audience. And outside of the fact that those episode are for the most part significantly better than the ENT finale, I find devoting to episodes to other characters when the production was very aware that it was extremely unlikely they would be renewed was a serious betrayal. Much in the way that people were offended by the final being about Riker and Troi looking back at history records, rather than seeing the events from the crews perspective, this is even a worse use. Though again those episodes were at least better.
Using episodes to tell someone else story that isn't from our characters eyes, was not something I am ever going to be a fan of. Imagine Picard telling this season but keeping it not our characters personalities and experiences by alternate timeline version.