FR4 is Modular - Can be converted into half plate and vice versa by cutting the retention bridges with a flush cutter. If needed, I can cut the plate into a half plate - just enter your request on the provided text space.
POM - Will have micro scratches that does not affect functionality.
PP - Much less relief cuts as it is flexy enough even without the cuts.
Modifier stabilizers can be taken out without desoldering the whole board.