We will rather record the mutations (or more accurately, the transitions between immutable states), and just replay them on the client.

Few questions -

How can we replay all the mutations?

How about instead of replaying, if we just show the last mutation? Will it not be the same thing?

I think this flux architecture will work best only in chatting applications. This approach is also making the app itself very chatter so performance concerns in case you do not have strong machines.

I think on form pages this flux approach may not be required.