Request - DrDamage type addon

[Ziras]

To elaborate, I am not asking for a DPS meter. I am asking for something akin to WoW's DrDamage addon, wherein it calculates approximate values for all of your abilities (damage, healing, hit chance, averages, max and minimum values, etc) using all known values and variables.
It's certainly an enormous task, with a lot of number crunching, alas i have no experience with these things. So, please?