I agree! I do a lot of indoor soccer! Talk about complaining! It is further a lot harder than baseball because in indoor soccer, outdoor soccer, and basketball, you can have two VERY different styles of play (and since the play is dynamic, you have to allow the styles!). Often, you will have a team that is aggressive, the type of play where they challenge every ball, do a lot of hands on contact like hand checking, minor bumps slightly after a ball is kicked away. Then you have a team that tends to play a bit more cleaner style. When these two teams compete, you can have a tough day on your hands! Are you going to allow the aggressive team play their style as long as they don't start altering play by taking advantage of the contact, or are you going make that aggressive team play a clean game like their opponent? It is a VERY tough decision to make!!! Let the aggressive team play and the clean team complains. Call a clean game and the aggressive team complains.

Yes, I could call these soft fouls all day long, but don't because it would slow the game down and make it ugly. My job is to make sure that these trifling fouls don't put the offended team at a disadvantage in play. Usually, it doesn't, it is just sort of annoying to the offended players. Now, my job is to mediate; to explain to the offended team that I will not let it go any farther than that and keep my word. Usually, this is enough to keep everybody happy.

But complain they do! It has to be handled in soccer/basketball just like it is in baseball. You ignore a little, you give them looks, then you ask them to stop, then you warn, then you eject. Simple enough.

All the time in soccer, team captains approach me for a clarification about a call. They are not per se challenging my judgment, but rather trying to inquire about what the call was and why. Sometimes, they are in a heightened emotional state when they do so. Again, I handle them the same as in baseball. Certainly in soccer, I do not let any person continue to question my judgment calls! That is dissent in soccer. The first offense is a yellow card, the second is an ejection because of the second yellow card. About the same as in baseball!

I give far more verbal warnings in soccer than baseball! The game is different in that more players are involved in situations that offend them, or where they have offended.

Anyway, baseball really isn't that much different than other sports concerning coaches/players arguing/questioning calls, and I think the basics for dealing with these situations is fairly similar between many sports.