Well I have finally decided on a format for my products that I will be producing from now on. All the free stuff and stuff for sale as well. One pretty uniform style / format. Need to improve the logo look though. That will take a bit more work on my artistic side to achieve.
I am pretty much borrowing the major elements of the design from several game companies I really like the look of their products. Why reinvent the wheel when I can borrow and personalize instead and make for a nicer look than my own design sensibilities would go with.
Cartography will be the hard spot. That is the next main challenge to overcome. I can use stock and purchased art easy enough. LPJ Designs have a ton on RPGNow.com and others.
Also thinking I am not going to concern myself so much with the saleability, instead going for what I want to buy, what sorts of products I want and make those instead and let the chips fall as they shall.