I do think these changes should be made.
SS shouldn't be self-cast. Should remain as before but nerfed duration. Self SS lasts 40sec (same as now) but when used on another player (enemy or party), it only lasts 20seconds. Masking usually adds 8second per grade. But when you SS another player, masking only adds 1second per grade. Making g20 masking to have an extra 20sec effect when casted on another player. Having a full 40 second SS on another player with g20 masking.
Usually priests SS piercing warriors to ress their party. But now, even if there's only 1 or 2 warriors around, they may not be able to ress anyone at all, even in SS. I do think priests should be able to SS 2 or 3 warriors and then ress their party. (can't SS everyone with only 20sec or even 40sec anyway)
Or maybe give SS slots. Lets say 3 slots. Being able to cast SS on self + 2 other peoples. If you casted all 3 on others, you're unable to cast another one on yourself until a SS ends.
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For miracle recovery being self-casted. Outside castle war, mheal should just work as before, cast-able to everyone. Self-casted only in castle war. Since mheal doesn't get much advantage while pking anyway, it's more of a leveling skill. Shouldn't be self-casted outside castle war.
Priests tank baku/brue/minos with SS, then cast mheal on a party member to recover hp... Should also be able to use this skill while pking and is low on pots. SS themselves and cast mheal on someone while they buy pots or whatever...
I'm simply trying to make priests more fun, they already have a lot less killing power since no class gets massive NK for tactics anymore.
Just sharing my thoughts

Yours truly,
Jay