In a comment, Kring posted something that I would like to address:
Besides that it, again, encourages all the tricks to "cheat" Recount like
- not target switching
- dotting unimportant targets
- using AoE spells where not useful
- not moving our of fire
- not using non-dps abilities like decurse or spellsteal
In my view, the idea that one can "cheat" or "pad" the meters is something of a fallacy. It's technically, or hypothetically, possible. But in practice, it's extraordinarily unlikely.
If you are good enough to push yourself near the top of the meter by padding, you are good enough to top the meters through normal play.
Topping the meters requires knowing and executing your rotation, using cooldowns appropriately, not dying, and casting as many spells as possible. Padding the meters is essentially executing the same steps, only substituting the "padding rotation" in place of your regular rotation. If you can't execute your normal rotation correctly, you won't execute your padding rotation correctly. If you aren't casting enough normal spells, you won't cast enough padding spells. If you aren't popping enough cooldowns in normal play, you won't pop enough cooldowns in padded play.
To reiterate, playing to pad the meters on a boss fight is the same process as playing normally. A player who is having trouble playing normally is going to have the same trouble when playing to pad.
The harsh truth is that DPS meters work!
The people who are consistently at the top of the DPS meters are your best DPS players. They will be the ones who are better at interrupting, at using utility spells, at moving successfully. The players at the bottom of the meters are the ones who need the most improvement, who will also be less likely to interrupt correctly, to use utility spells correctly, to move out of the fire.
There is a point where this is not true, where class and spec determines your position on the meters. That point is known as Paragon and the other Top 10 guilds. For everyone else, position on the meters is determined by the quality of your play.