How about a keymap option for cycling through group members...
Example:
Cycle Group Member In / Cycle Group Member Out
or
Cycle Friendly Target In / Cycle Friendly Target Out
Currently you have to target each group member individually by either free-mouse clicking their bar in the group window or by using the function keys (default settings F2-F8)... I think being able to cycle through group members would be a helpful option for medics and vanguards to use for selecting friendly targets for heals, cleanses and buffs... There's already keymap options for cycling through hostile targets, and there's an option to cycle intended target (cycles through hostile and friendly targets), but there's no way to cycle through group members.