I think that there should be some kind of mixed vote for the all star game
The actual system is bad because teams that rotate much the player because have a deeper roster or are too strong vs the other teams to play often garbae time or have more balanced teams than the other,can have less player in ASG while deserving it
I think there shoudl be two phases
1-The system give the result of the vote of the fans,as like yet happens,so giving a list of 4 players/role in every conference
2-The human coaches select 1 player/role fore every role among the players in the list given by the fans,and the players with more votes by the human coaches will play in the ASG(both for starters and bench players).Among the players with the same number of votes by the coaches,the result of the fans's vote will decide who will have the priority(starter,bench player,out of the ASG)