If changes were made that addressed this for other people who have experienced problems with it, would the game still work "reasonably well" for you?
What changes? Make them into 4E fighters? Make them all battle masters with more powerful options but still using things like superiority dice? Able to jump double the distance of the world record at will? Able to do mythic things like redirect entire rivers by themselves? Big nope. Not for me.
Do something to lower the capability of casters? Give fighters a couple more options to gain skills or capabilities for things out of combat? Maybe.