I'm respeccing from fight to fight, the 20RP deposite is usefull if there isn't any interupts anyhow.
there are 3 different specs I run with Endless, on a pale horse and RMP al depending on the fight. But yes it is a valid point you are making.
The gem/meta enchants change would gain me 89mastery and I would loose 10str and 54crit. When looking at EP values this is very close to the same, and I'm just gonna wait on the new metas and not waste changing a malestrom enchant.