After playing with multiple methods of Directional/Faceted shielding we decided to use the method below.
Six shield faces as in Star Fleet Battles and Federation Commander using the existing 3 divisions as a base.
ex 1. Fed CA has 3 blocks of 6. We expand that to 6 blocks of 6.
Shield 1 = 6 Points, Shield 2 = 6 Points, Shield 3 = 6 Points, Shield 4 = 6 Points, Shield 5 = 6 Points, Shield 6 = 6 Points
ex 2. Fed DNF has 3 blocks of 8. We expand that to 6 blocks of 8.
Shield 1 = 8 Points, Shield 2 = 8 Points, Shield 3 = 8 Points, Shield 4 = 8 Points, Shield 5 = 8 Points, Shield 6 = 8 Points
Hull points remain the same and are reduced after the facing shield is depleted. After a few more tests we may discover that ships are destroyed too soon and HPs may need to be increased.
This does mess with the PV numbers but since every ship/base in the game has these expanded shields it evens out. (Well more or less.) It is also an easy method of allowing extra defense tactics without a huge increase in complexity.