logical approach to DPS meter ingame

[Erys]

I'd say a nice compromise would be give us a DPS meter, but it only works on the Striking Dummies.

Bad idea, Striking Dummies don't have mechanics, downtime or party compositions. It's a bad testing ground. Sure it tells you your 100% uptime dps rotation. But you are not going to have 100% uptime always and will need to see numbers on the fly and after the fact to see how to minimize the impact said downtimes have on your dps.
Also cd usage, when to save or when to use for max damage during acertain fight. Unless they add mechanics to dummies, which won't happen, this is a useless idea. But I appreciate your effort to make a compromise.