Me, I like baseball in any venue. More power to all of them.
LL plays a very important role. It is intended to be recreational, so that really anyone can play and enjoy the game, regardless of ability. Even the best players benefit from being out there with their schoolmates.
Legion is fine by me. There was a time when it was THE summer outlet for the HS player. Those days are gone and not coming back. Legion simply cannot compete with travel ball in terms of offering scouting opportunities to the college bound player. But Legion still offers a strong playing experience to a lot of HS age guys. Gotta love that.
I don't get the point of arguing one vs. the other. Both serve valuable roles. They aren't even competitors, since LL's Senior and Big League divisions are very very weak and no threat to Legion ball at all. I don't see why we cannot appreciate them both. A lot of families enjoy both, at different stages of their sons' lives.