Well they have continued to update the war system. Recently it has started to take into consideration you and your opponents level and skills. So they have made it easier to determine who you should attack with a color scheme matched against your level and skills, and as usual with any color scheme it's green for easy, yellow for medium, and red for hard difficulty.
So now you don't even have to read, just click the pretty color!
Still haven't seen the heal your friends option.. but i'm sure it's comin..