Before everyone starts saying "Oh just look up and guide on map/epm etc etc" All jobs aren't the same so not all jobs have good mobbing skills. Some people are weaker. Some people are slower. These are ALL valid reasons why there should be a EPM command. Basically you would type in something along the lines of ~epm and over the course of a minute it records all of the exp you got in the minute and the % that exp would give you. I've seen this happen before. I loved it and I would love to see it here. I personally think seeing the exp i make in a minute somewhere would motivate me more.
As mentioned in all the previous feedback threads where new commands have been requested, we are trying to rid the server of as many commands as we can. With that said, it's highly unlikely we will add any new ones at any point in time.