It would be simpler and would require minimal alteration of the original idea to add a section on "opponent assessment" to the game report, in addition to everything else.
We play, write a report, and mutually "express our opinions."
Complaints were received, and I suggested a solution.
H2SO4, as a way to satisfy your wish: you can easily get a yellow card; just don't confirm your report in the seasonal league for a couple more weeks and ignore requests from the organizers:
01.06.2014 Graf_Bananov (Blue, Necropolis, Galtran, Galtran) def H2SO4 (Red, Stronghold, Kreg Heg, Kreg Heg) Jebus Cross 133
Осень-Зима 2013-14.