Yes, I did.
It’s totally useless when the sim focuses on spells I normally never use. Can’t compare gear when the sim ends up with stat weights that have nothing to do with reality.
If I were doing 10k HPS in an m+ (save for a few nasty packs), that would be terrible. My job - and in fact, any healers job - in a key isn’t to pull the highest HPS possible. It’s to keep the party alive and do damage to make the run faster. If I sit back and spam holy light, then something has gone terribly wrong.
That’s another reason why simming for HPS is silly: it’s not a goal to increase it. If you’re at a stage where simming is even worth considering, it’s much more useful to sim for damage, because your healing will be enough anyway. I mean, on my pally at 220 ilevel I do pretty much the same overall HPS (~4-5k) as I did at ~200 ilevel, in the same key level, same affixes, same dungeon, same party (though different covenant). The difference is, I do a ton more damage.
For DPS their goal is to do the most damage possible. The spells used will be very close to what you normally use anyway, thus, the stat weights and item comparison make sense. For healing, though, the goal is not to do the biggest HPS. Often times, gearing for HPS would be a mistake, and detrimental to your performance.
I’ll give you an example: to maximise HPS on a druid, I’d need to gear for mastery, and have that stat as the highest weight after intellect. That would, however, plummet my performance, because I’d be missing out on haste, which is useful for both healing and damage. Thus, mastery drops pretty much to the bottom the moment I can keep my party alive. A sim will not tell me when that happens.
Even worse is the case for a paladin: the sim makes Holy Light the #1 healing spell, suggesting I should gear for making that stronger, meaning crit > haste > mastery in general. However, in M+, you rarely use Holy Light as a paladin, and focus on Holy Shock, Word of Glory, and (most importantly) damage instead, which prefer haste > versa > mastery > crit. None of the weights are at the right place if I go with the sim, making my gear choices bad, would I believe the sim.
Funnily enough, if I do a gear check, Mr Robot tells me my current stat distribution is great, a direct contradiction to what its own sim would suggest. Very useful, yes.