UPDATED TO 9.0.5
Source of the original Author who I worked with to make mine (https://wago.io/onNMblCin)
It probably shows identified errors on wago.io but its just due to the refresh rate during the buff.
What you can see is:
A) Amount of People inside your Group with Spirit Shell absorb on them
B) Time left to apply more Spirit Shells (Also indicated by glowing border during buff)
C) Average Absorb amount in your group (Top bar)
D) Total Absorb on the Raid