If you don't like
Galadriel, LR the easy solution is just to not play a game against an opponent who is using her.
- If you are playing casually in person, just tell your playgroup that you won't play against a deck using her. There are plenty of other decks to play with and people will oblige
- If you are playing online, just tell your opponent before you start the game that you will not play against a deck using her.
- If you are running a tournament, see what the majority of players feel (which is usually to just ban her) and then do what they want for that specific tournament.
For the LOTR tournament at SW worlds last year I announced in advance that we were banning her for that specific tournament. For the LOTR tournament at the TX SW event in April I will also be banning her. That's what the majority of players who will be at the event want so that's what we will do. As long as people know in advance there should be no issue.
Galadriel LR is definitely a pain, but some people do enjoy both the decks she goes in and the challenge of building a competitive deck that can beat a deck with her in it (or changing the strategy of how you play your favorite deck to be able to run to 9 against a deck with her in it). For our local playgroup we just make sure to only play a deck with her in it if the other person doesn't mind playing against her. If someone really wants to play with her, then there are others who also want to play with/against her and they can play.
Basically, there is no reason to modify the official ban list (because that can open a can of worms and be a slippery slope once people start complaining about other cards - everyone has different opinions about what is broken or NPE), just make your preference known in the games/tournaments you play in ahead of time and all is well.