I actually think it has pretty good systems for "trying out" a specialization before committing to it (except for maybe the capitals and super capitals). Pretty much all of the T2 "specialized" ships have a T1 equivalent that can be fitted similarly. If you want to try out exploration, or mining, or hauling, or ewar, you don't have to wait until you can fly the expensive, high skill requirement ships. You can learn the basics and see if you like it in expendable T1 ships with cheap fittings.