Equanimity as a factor of enlightenment is not totally neutral, but brings a sense of peace and healthiness. It a mind-state that does not get caught up in any experience, whether good or bad.
Thannissaro Bikkhu mentions "scepticism" as a useful tool toward equanimity. Not hot, doubtful scepticism, but not believing every thought that arises. Relating to them "with a question mark".
"A Sangha is a community of resistance, resisting the speed, violence and unwholesome ways of living that are prevalent in our society. Mindfulness is to protect ourselves and others. A good Sangha will lead us in the direction of harmony and awareness. The substance of the practice is most important. The forms can be adapted." ~ Thich Nhat Hahn