Yes, "Two Idiots in a Trenchcoat" is a bit too weak and specific in hindsight. It is inspired by the Dazzler perk so could use a similar boost.
The creation of the different rewards was tricky because of exactly what you wrote: Coordinated Attack is so good, why take anything else? So I had to walk a like between writing easy-to-use general abilities but then them being too strong through their ubiqituous use. Another goal I had given myself with these rewards was to create options for "martial" classes to do useful stuff outside of combat, like most caster classes can do.
I will think of more rewards snd see how I can make them strong(er) contenders for a choice of reward.