mm, interesting question. As Richard implies, I don't know that you could come up with an automated approach that would do you much good -- you could have an action that added a couple layers for things like Levels and Hue/Saturation that targeted the Blue color channel, but then you'd still need to adjust each one according to the things that cause the variation (orientation to the sun, etc). The shots where the sun is in front of you will be the worse simply because of that. You won't be able to get the same deep blue sky that you get when the sun is toward your back or somewhat to the side where the polarizer can get good mileage.
I myself do sky stuff in the Raw processor where I work a lot with blue channel luminance. I use Lightroom, but if you're using Photoshop ACR has the same tools in the HSL section. I do get some nice mileage doing that either with the blue channel or using the targeted adjustment tool to drag down luminance in the sky. To automate something like that? Well, a preset, but again each shot from a different orientation will take a different "stroke"!
I do emphathise -- I really don't like a scene where you have to battle with the sun! Sometimes of course you don't have a choice, like in a lot of event or sports photography, but still...waahh!