How are you coming to the conclusion that because Earth MAP doesn't add damage to Elemental Fist, that PIE doesn't effect stun, bind, or DoT even tho it increases enfeebling? Or am I not understanding your post? Magic accuracy only increases the chance of landing and not being resisted iirc. Not sure on exacts specs for enfeebling, but since enhancing effects the amount of regen per tic, or potency of stoneskin, I'd imagine enfeebs work the same for DoT etc...