I only skimmed this topic, so apologies if this has been suggested.

I know that an in-game parser isn't likely to happen. But the idea of seeing your own DPS numbers on a striking dummy has been mentioned in the past.

I used to play a lot of typing games to improve my words per minute. I can now type over 90 WPM last time I was tested. What if some sort of DPS mini-game was set up in the Gold Saucer for people who wanted to practice their DPS? It could start out easy with just a striking dummy, then as you advance and get better it would start fighting back so that you could work in dodging and other strategies. Your goal would be to beat your own high score and it's not shared on any leaderboard or anything. It's just for self-improvement.

I don't know, maybe it's silly, but it's a thought.