Playing the libero position might be fun for that individual. In fact, if I were growing up in today, I might be a libero because I was a pretty good passer. However, I hate the libero position on principle. The position allows people to be an incomplete player. Some examples on old school...
1. You're a great passer. You're digging up a lot of our shots. However, we're going to punish your team when you get in the front.
2. You're a great hitter and blocker. You're killing us and blocking our shots. However, we're going to punish you when you get in the back.
To stop the other team from punishing you, you have to be decent at all the positions. It also gives each person a chance to win the game in their own way. In today's game, a person really only needs to learn half the game. To make it worse, a person is rewarded for it.
Coaches probably like the libero position. It seems like it was created by coaches.
A lot of people will disagree, but that is just how I feel.
Last time I heard, experimental rule, Libero gets to serve...like pinch hitter/server once per set.