Honestly my main issue right now is just the long cast time and high MP cost of geocolure spells (luopans). I would not be bothered that much having to dispel them and summon them again if the party moves, but the fact that it takes so long and takes a huge amount of MP for the debuffs makes usage of the job very difficult in events where parties move around a lot.
Buffs should affect alliance members- since the affect is applied/removed as you enter/levae the aura radius and the radius is rather small, I think this would be a fairly harmless change.