Your right about Harlequin, but I still would like to see the respective 2hrs. Using a new OD will bypass the spell recast timers, for chainspell to work, Mana Font idk, maybe it will force the auto to use only elemental magic spells while active, and reduce the spell cast time to something where we can see it use at least 2-3 spells while under MF. EES is not omgwtf, but its not absolutely terrible. A new mnk style frame would be cool though. Cant have everything, if you dont like EES, dont use the rng frame lol.
Boosting parameters on OD is also a cool idea, not gonna knock it.
But idk, with the versatility, and options pup is supposed to provide, not everyone will be happy with having OD being one way or the other, cause IMO there are many ways it can be changed to.