Also perhaps a highlight or glow to individual channels buttons would be helpful.
When using the radio to talk to Squad, then country, then private in the thick of battle, it can be difficult to distinguish what channel button is currently activated.
(When firing off multiple messages to different recipients when the radio bar is open)
As it is now, an activated radio button shows a slight indent that is slightly more fuzzy than the rest.
Something a bit more distinct would help.
BTW, what does the little stationary triangular arrows on each radio button denote?
(From left to right in radio bar, they point:
Left, Right, Up, Down, Left )