It already exists, but isn't fully working.
Edit: Done, but I'll correct/update Rend+DeepWounds first before I release a new version. That one should have everything implemented working correctly.

Here's the common problem:

You have 2-3 items per slot of relative strength and each change in item changes the strength of the other items / talents.

Take for example the choices [Felfury Legplates] and [Leggings of the Immortal Night] combined with [Hard Khorium Battlefists] and [Gloves of Immortal Dusk].

Each item is on the same loot table, and depending on what you are already wearing, the choice may not be too clear. Finding the right setup wouldn't be too bad, but changing items in these slots might change the item of greatest power in other slots also. This is why SEP is very handy. You can quickly glance at the ratios to quickly determine what item would probably be best for that slot so you could test one against the other, instead of mindlessly guessing.

I hope I explained it better..

I'd love to do SEP, but as explained it's something spreadsheets are way better at. The shaman sim takes over 15mins to do SEP and it is very fast.

Updated my sim to 1.9, it's very good now.
You'll find the link and changelog in my signature.
There's even an Arms DW rotation in there, I think.

Seems like Arp had been renamed in the library. Edit: Oh, wow. They f**d up the german translation, there are two different Arp versions.
Also, thanks.

I tried it again today. Gave me really low crit% was like 27% or so and this is when I almost have 50% self buffed. Are you calculating the conversions at the 80 level?

Loading the gear, gems, and enchants was pretty easy. Good job on that. Everything else... so far kinda useless. Needs more fixing.

It's for Lv80 only. I kicked the lv70 part when I was reorganizing the code. I've updated the page with a red lv80 .
Unfortunately I get very little feedback, but it's working fairly correctly.

Tankietka,

I played around with your simulator today. A few feature requests:

-Change stat input to take straight percentages or ratings. The decimal point input system is really unintuitive.

-Change the way to input weapon damage to be you input the minimum and maximum damage, then it figures out the average damage on its own. Yeah, yeah, it takes 3 seconds to figure it out on your own.

-Add a BS>MS>WW>Execute>Slam cycle.

-An input for 'average number of targets present'. It would be for figuring out how DPS changes on fights like moroes or muru and on trash. Maybe add Sweeping Strikes as a buff too?

-I'd like to know which specs are 'more RNG' than others, if any. The best way I can think of to implement this would be to allow us to run X number of simulations of Y seconds, then the sim spits out a line graph.

I think it is rather personal preference. But if there will be more people requesting this I can change it. Or maybe I will add option for "mode" switching :-).

Well, you said it yourself, 3s.

Added to TODO list.

I will definitely think about those when I will be adding new features in the future.

Thanks for sugestions :-).

I'm sure you'll get some more feedback once we hit 80