Some more information on mangle-spam. I've decided to give it a try to see how hard the DPS will suffer from the switch. The approach is simple: replace Glyph of Shred with Glyph of Mangle and forget about Shred completely. Of course, real-world comparison is always nontrivial, but at least I have some data to show.
Going back to the beginning: I performed simulations using my current stuff (no armory link since I happen to tank at times, so it would be often wrong), the raid-buffed stats are:
AP: 12448
Atk Speed: 0.71
Hit rating: 234
ArPen: 1326
Crit: 61.79%
Expertise: 23
Procs: Mongoose, ilvl 264 Idol, Trinkets: Herkml War Token, ilvl 264 Deathbringer's
The low Crit comes from the fact that I'm using Cryptmaker.
Talents: the standard single-target Cat build (with 3/3 Imp.Mangle).
Using the current default simulationcraft rotation (and optimal_raid=1):
DPS with shred: 11574
DPS with mangle: 10924
As indicated in an older message, a 5.6% loss, which is not negligible.
Real-world data from Festergut 25N: 11086.9 DPS (NOTE: with +5% ICC buff!!!)
WoL:
World of Logs - Real Time Raid Analysis
(apologies for the "anonymized" log, guild policy)
I was lucky, I never had to move around, so it was continuous mangle-spamming.
How it feels (I kept testing for some more time):
- the shorter duration of Rip makes it very hard to FB, the end result is that it's better to never FB and just use a 5 CP rip followed by a 3 CP SR refresh, rinse and repeat. Keep up rake, of course....
- the reduced energy usage can make it hard to reach 0 energy during a berserk, expecially if you hit a streak of OOC procs.
- the DPS "cycle" becomes a whole lot easier: no need to take care of shreds extending rip, no need to care about positioning, you can keep happily spamming even when moving around to position yourself correctly.
- looking at some other fights I've done since, I'd say that the DPS loss can be noticeable, expecially when dealing with adds which die fast: mangle/shred-spam eats energy faster but gives more short-time damage than mangle-spam (note: glyphing shred is irrelevant in this scenario, so you can still do it, I just chose not to for testing).
Another detail which may be interesting: on Festergut mangle accounted for 23.1% of my damage output. This means that even if I had gone full mangle-spam WITHOUT the glyph, the impact would be small, only an additional 2.1% DPS loss. Result: assuming you have improved mangle, if you're ready to sacrifice around 8% of your DPS you can go mangle-spam without touching your glyphs.
Now, 8% is a lot, but this assumes that you are able to execute the shred-based cycle as well as mangle-spam. For me this is not the case (I don't use any move-suggestion addon, just timers), as a result the easier mangle-spam approach results in less mistakes in the cycle, so the difference is definitely smaller. For comparison, in the Festergut example above, I'm less than 5% close to the theoretical simulation, even without correctly respecting all the complex rules used in the simulationcraft profile, but just going Rip@5 SR@3. After checking, this is one of the times where I'm closest to the theoretical simulation values.... when using shred-spam I tend do to worse (even if the overall DPS may be higher).
In conclusion, I'd say that:
- if you're in a DPS race scenario, then mangle-spam is out of the question, but then this is assuming you master the shred cycle, otherwise the difference may turn out to be smaller than predicted by the simulation.
- for combats where positioning requirements are messy, mangle-spam will be on par with shred.
- for combats where there's a lot of distractions and survival is a priority, unless you really master the shred cycle (= you don't need to look at timers), then going mangle-spam is probably a win simply for the fact that it requires a lot less concentration.
- if you're ready to have 3 points in Imp.Mangle and can afford a 2% loss, you can just go mangle-spam even without the glyph. This is obviously a bad idea, except in fights where there's a single short phase where you need to focus on outside events: you can then mangle-spam in the critical phase and then revert to the normal shred cycle during the rest of the fight, the DPS loss will be minimal and you get the benefit of having a simpler cycle.
After the testing, I've decided I'll go back to the Shred glyph and the shred cycle, but in the process I have learned that mangle-spam may have its uses in specific scenarios. If you are curious on the effect on your personal DPS, next time you're on a farm-mode boss just test it (even without the glyph, you'll still get an idea). The simplest approach is to replace the shred button with a 2nd copy of mangle, then you don't even have to change your keypressing habits
