The other 10 or 15e skill won't cause as much damage as the echoed elite will.
Reckless Haste exists but don't forget you need to cast it *twice* to cover one use of SS. It's been nerfed more or less into oblivion - a 15e adjacent-AoE spell causing a higher miss rate for 12 seconds. Reckless will also not increase the damage output in hard mode.
First of all 10 seconds isn't exactly a short recharge time. Second, if you can choose, do you prefer killing fast or killing slow? Third, you forget that Arcane Echo isn't just utility for SS but for your entire bar, almost whatever spells you bring. I'm sorry arcane echo just seems pointless to me. Reckless haste is pointless in HM,except for running PoF, because they already have an attack and movement speed buff. Very rarely do I actually have to wait for the entire 10 second recharge. More often than not the HRT mod kicks in and it's only a 5 second recharge. I prefer to use Price of Failure in place of echo just because I can spread it around about as effectively as I can spread SS around because the HRT mod helps so much. Then with all the missing they are doing and SS triggering prior to the skill actually going off you're looking at pretty much the same damage output. Try it sometime. With the right mods on your staff or wand and focus whichever you prefer it's possible to run without arcane echo.
Reckless Haste exists but don't forget you need to cast it *twice* to cover one use of SS. It's been nerfed more or less into oblivion - a 15e adjacent-AoE spell causing a higher miss rate for 12 seconds. Reckless will also not increase the damage output in hard mode.
First of all 10 seconds isn't exactly a short recharge time. Second, if you can choose, do you prefer killing fast or killing slow? Third, you forget that Arcane Echo isn't just utility for SS but for your entire bar, almost whatever spells you bring. I'm sorry arcane echo just seems pointless to me. Reckless haste is pointless in HM,except for running PoF, because they already have an attack and movement speed buff. Very rarely do I actually have to wait for the entire 10 second recharge. More often than not the HRT mod kicks in and it's only a 5 second recharge. I prefer to use Price of Failure in place of echo just because I can spread it around about as effectively as I can spread SS around because the HRT mod helps so much. Then with all the missing they are doing and SS triggering prior to the skill actually going off you're looking at pretty much the same damage output. Try it sometime. With the right mods on your staff or wand and focus whichever you prefer it's possible to run without arcane echo.

