@JoeBobMack
I have found myself thinking fight scenes are boring for exactly the reasons you state - repetitive and offering little or nothing toward character development or plot advancement.
The whole idea of fight scenes is that they're generally not terribly thought out or choreographed. And typically, they're over before anyone is quite sure what the hell is going on.
That's part of my 'fog of war' strategy for writing fight scenes. Skip descriptions of everyone's facial reactions (i.e. NO showing), keep the sentences incredibly short (think of someone in the middle of a fight stopping to give a long monologue during the action, and that applies to the narrator too), and keep both the reader and characters guessing.
Since there are few fights which unfold like the old-fashioned 1950s westerns, usually one guy surprises the other, and then in the flurry of punches, no one is really sure wtf anyone else is doing. However, another FOW technique is that often there's a quick adrenaline rush, and when that kicks in, generally the mind goes into overdrive, so the character won't see what's actually happening, but will notice all sorts of unimportant details, like the curtains billowing, the reflection in the broken mirror, or during actual war scenes, the shrubbery rather than the actual combatants.
Then, when the fight ends (making for a VERY short chapter), the characters can gather afterword to figure out what the hell happened, as they try to assemble the pieces from their various memory snippets.
That approach has always worked or me, simply because it is the polar opposite of 'long and boring'!