Axles are sized for steel dropouts.

It isn't a significant problem for aluminum dropouts which are strong, and just a little wider.

I've wondered about carbon fiber dropouts. I'd like as wide of support as I can get. Also I've had skewers which are just too short.

Unfortunately, there are very few extra long front axles.

You won't get a lot of extra stress on the axle using a short one. But on the droputs???