Would you like an in-game parser?

[Lambdafish]

They can already roughly judge their DPS. I'm not sure they really need 0.01 precise number to have an idea of their skill range.

Are you referring to SSS or observation? Because SSS is nothing but a baseline checkbox of gear and rotation, it is a drastic improvement over what they had, but when it comes to doing the actual fight then an active readout of your performance is far better in knowing where you went wrong and can help groups identify where they are going wrong not only with rotation, but with mechanics.

I'll use myself as an example. I'm a tank and I'm not a very good DPS. I know my DPS rotations and can clear SSS just fine, but as soon as I'm put under the pressure of the fight, and movement is involved, my parser numbers drop drastically because my rotation is constantly broken and I'm concentrating on mechanics rather than buffs. Basically, the experience is completely different to a static dummy.

In a sense, SSS has actually made it worse by telling me that my DPS is fine and that I'm not the problem, when in reality my parser numbers are actually quite a bit below what they should be to beat the dummy.