Been playing for a couple years now, and it was fun at first but now it wouldn't be worth starting new. The formula for the game seems to be: developers release a new team (all new characters are always the new meta), charge $59-$99 to unlock, and force players to grind out leveling and gear. If you're willing to pay thousands (not kidding), you may be able to get a top squad that's relevant for a few months. Then you'll have to rinse and repeat. If you don't pay to play, basically good luck.