I assume redemption, ingathering of the exiles, restoration of justice, restoration of Jerusalem, restoration of King David's dynasty, and restoration of the temple all are referring to what we colloquially refer to as the "coming of Mashaich." That is, I assume all redemption requests will be fulfilled at arrival of a new era, relatively all at once. (When it comes to personal requests, they get fulfilled very differently at very different times since their deliverance may not be related. For example, health can be granted very independently from livelihood (but not necessarily).)
Why are the Mashaich-related requests treated as separate if they are truly deeply interrelated? Wouldn't it be logical to have one request for one event?