Imo the licenses look a bit expensive. It seems more worthwhile to just buy and insure a ship then use a corp manufactured one. Although that could be dependant on the ships fittings. But you have to take into consideration a lot of the ore that's going towards ship manufacturing is actually mined by the people flying said ships. If we had a seperate mining wing of sorts who focused on corp mining to produce ships and whatnot but also got a cut from the licensing, it would be understandable.
I don't know how much sense I'm making right now. Was out almost all night last night and I'm a little out of it... :P
After looking over the list and thinking a bit more, I can see how an industrial license would be well worth it. 5mil for a fitted retriever is quite a nice price. The cruiser license also seems pretty worth while. 5mil is usually a bit less then you'd pay for a fitted cruiser. (I have to ask thoigh, does fitting include rigs? In that case it's a very nice deal) The battlecruiser license looks pretty decent. you're probably going to be paying 20-30mil for a BC anyways so putting it back into the corp is nice. But I think adding an "advanced license Plus" for a few more mill that includes full fittings on BCs would be nice. And last but not least the basic license seems more then worth it. 100k for fitted frigates, sign me up.