'Arbitrary' means based on random choice or personal whim, rather than reason or system. When team selection seems 'completely arbitrary', it suggests the choices were made without clear criteria, logic, or fair process - they were random or capricious. 'Amiss' means wrong, 'ample' means plentiful, 'apparent' means obvious, and 'appalled' means horrified - none of which fit the context of unfair or illogical decision-making.