To much freedom is what has killed this game as everything has to be balanced to keep everything equal so that just makes everything the same. With job/sub job you could make classes more special as you could only select skills from 1 other class that is half your current rank. That kept everything in check.

With the system we have now could you imagine if skills and abilities were effective????? Think if they took the skills and abilities from FFXI and made them effective like they were in that. OMG you could hit cap with every class and just destroy everything. But they new that so that is why they put in the restrictions, FFXIV has very few restrictions so they have had to make everything level as to not give anything an advantage and that just makes it boring.