I like the color coding you've done Stalin. But maybe you should rename your troops and give them codenames so it's easier to tell who is who? Just a suggestion.
I suppose you know this by now but if you don't it seems you have to select the unit next to the node in order to disable it :P
Looks like you should consider the 'low difficulty' missions for sending whole teams of less experienced dudes on. "Grinding", it's called.