Only problem i see is people not using manuevers at all.
Who can blame them? it's tedious to keep them up forever in a long EXP party, for instance, especially when their effect usually isn't something dramatic (Not saying its bad, just saying it doesn't make the user go "OMG WOW!" because its not like some weapon skill or other drastic move). If it was less tedious to maintain them, you could potentially decrease the number of "bad" PUPs.