The old system had the continuous review in its latter years. If a player had 7 consecutive 0.1 increases, they'd be flagged on a report . This would hopefully be regularly reviewed by the handicap committee, and they could choose to increase the players handicap to a more appropriate value. There was also the annual review.
Where I am we had a committee of 5 and often it was hard to get an increase over 2 shots despite it being very clear that a player needed a bigger increase.
It also often caused a lot of derision in the groups when somebody heard that a player had been increased by committee. When I had an increase it was investigated by the Captain following complaints by a couple of players. At least now nobody can dispute the numbers as all players records can be seen by all players.