Quote Originally Posted by Shurrikhan View Post
I think the main issue is just that it's a spell speed increase rather than a cast increase, such that it's only noticeable at higher SS numbers, which are generally wasteful; an extra Ruin III doesn't make up for a missed Ruin III crit and all of them hitting 12% harder, etc.. Worse perhaps, because so much of this addition is in the base spell speed, as well, your attempts to increase this bonus aren't going to be efficient until, say, having reached double the base SS. Until that point, increases to Crit instead, especially with Ifrit, will probably create a greater spell speed contribution over time. Last but not least, Ifrit only attacks per ~1.5s and Garuda per 3.0s base. At a mere 20% chance, that's admittedly kinda pitiful. Theoretically, Ifrit should be able to maintain the buff (5 hits within each 8s duration), but as RNG as it is, that will rarely happen. Theoretically Garuda should have it up half the time, and could at least quickly score it off an AoE if needed. But she rarely does.

I suppose one thing that could work well in its favor is to simply have it go off every 5 hits instead. Or, give some element of control by which to rush pet attack rate temporarily as through oGCDs (think of it as River of Blood being changed out for Hail of Arrows, where every attack, including Blunt and Repelling, has a chance to refresh Bloodletter/Rain of Death and how you might want to pace those to get the most out of those procs) or a modification of Spur (not just a second Rouse), so that it actually takes some pet control beyond Contagion to optimize your own dps.
Well it being a SS increase does technically more than increasing cast time. That said, a reliable way to proc the buff is another alternative that I didn't mention but it still feels out of the control of the user really.