>>20443306Considering the stats it'll probably end up with, both are equally viable.
You could go for a DD/Roost/Return/EQ bulky attacker, a supporter with some combo of Cotton Guard/Roost/Heal Bell/Safeguard/An attack/etc, and potentially even a special attacker (especially if it somehow DID get Boomburst like people were speculating earlier). The presence of more than one set option will allow it to play multiple roles, and that versatility would make it a bit unpredictable.