I certainly don’t think you should be extending pedal axles or moving cleats and potentially causing physical issues to suit components choice. If you move your forefoot outwards there is a good chance that you heel will still track the current line anyway just with you foot at more of an angle and cause possible knee/ankle pain.
There’s enough variation in Q-factor/stance width (+10->30mm between road and MTB typically) between bike types that a few mm extra width is unlikely to make any difference unless you already have a pre-existing physical issue which makes you very sensitive to changes in stance width.
I do, but mines the other way, too narrow stance width causes me knee issues due to my massively bandy cowboy legs, so I run things as wide as I can.
On a road or CX bike a few extra mm will probably barely put you into the realms of normal MTB stance width, and certainly nowhere near the width required for fatbikes and wide BB’d DH bikes.
Not saying your point isn’t valid, just probably not that big of an issue for the majority of people.
If you were to take that approach then longer pedal axles is the preferable option over moving the cleat as moving the cleat can put odd loads into the sole/foot if it’s too offset, with longer axles the pedal at least remains more central under the foot. Longer BB axles can be an option but at the expense of chainline issues so again, back to longer axles as the better option. I tend to agree that it would be better to fix the hose issue if possible but this is a common result of chainstay mounting callipers.