You shouldn't be reporting based off stars alone. Assume stars are literally what they are - stars. You shouldn't really be reporting if the situation isn't black and white. Obviously the report receivers are competent enough to judge well enough what happened, but you don't need to be in positions where you feel like you shouldn't have reported someone - in that case you probably report too often in the first place. If it's obviously reportable then report it. If it doesn't seem that bad, don't risk the reported person being unjustly banned.
