/targetmode A B C work like this:

A: Up/Down selects PT members Left/Right selects targets based on current target filter (all/party/friendly/enemy)

B: Up/Down selects Target Filter (all/party/friendly/enemy) Left/Right selects targets based of current filter

C: Up/Down selects PT members Left/Right selects all targets (party or enemy)

Maybe my OP should read : Target priority should be changed to a cone shape moving from closest to furthest target on direction of selection.