The buff scale with lvl, and you do know adventurers still have to IP all the same nano skills, to all the same levels for other nanos.
The devs intended the new adv document to allow/force adventurers to be changing morph in combat and in very short time. HENCE the removal of requirements to cast the nano and casttime.
The most fundamental to an adventurer, his morphs, all being usable and scaling with lvl from start is not gamebreaking, it's gameflourishing