Benefits, QOL items, etc., are things an employer is willing to add to their cost of doing business in order to reduce turnover and promote loyalty and longevity. They want to keep valuable employees. At 500 hours you have relatively low "value" so those types of positions are rare and they are designed to reward those who want to stay for a long time, not to be exploited by the short-timer.
Find ways to add "value" to your resume and you'll have a better chance of finding one of the rare doors you're seeking. By the way, as one who has hired pilots in the past, whoring yourself out and padding the logbook do not add value. They are red flags, all too easy to spot.