For the record, I never got to play XIV through the 1.0 era (I had a 2004-era iBook laptop and no desire to buy any PC, much less one capable of running XIV). However, having looked at a YouTube video of the skills available at that time, I am curious to know what skills veterans from 1.0 would like to see if and when we see another level increase in the next expansion.
For me, an example might be:
PLD--War Drum. An AoE, enmity-generating attack would be very useful on the road to the next cap (if not sooner)