I also like being able to play all the different classes/jobs I choose to with one character. I don't think cross skills should be removed. If my character learns other skills, a certain subset should be available to him from different classes, that just makes sense.

One thing I would like to see is some variation in attack motions that would still look just as effective. Every PLD for instance has the exact same motions for Rage of Halone. It would be nice if it varied so that it didn't look cookie cutter.

I do agree that the job/class system is kinda weird. It's almost like choosing a job at 30 or above really isn't an option for a given class (except arcanist which has two choices but that results in a hard choice in allocation of mind and int if you want both jobs). If you don't take a job you don't get the hp boost. Not saying it should be changed just saying it is weird.