They should have kept the cross-class system. It isn't like it is hard to level a job to 34 or whatever was needed to get all the cross-class abilities. And it forced players to try other jobs in the process. It was a good system.

The only problem with PLD flash was that it was their only AOE to grab hate on a job that otherwise only offered single-target damage. Keep in mind, back then, physical DPS couldn't just spam AOEs. They simply didn't have the TP to do it. It was a different game. WAR had Overpower, but they'd probably only use it 2-3 times and then fall back on a single-target rotation. Different times.