I agree! Also to add on as to why brooms should be invisible, here's a reason as to why them being visible is frustrating:
-Makes it difficult for games that have 4+ players
-Makes it difficult for newer flyers to improve (they're not familiar with the courses so they might get disoriented when they crash)
-Causes lag
-Prolongs games
-Frustrates players
It should definitely be optional though. I know servers like the Hive have some options for their mini games where you can make players transparent (Death Run) and I think that should suffice. As someone who plays flying a lot, it can be really annoying tailing someone the whole game and not being able to pass them bc they obstructed your view and you crashed. Also ik it's annoying to crash as a newer player bc four people tried to go through a hoop at the same time. Flying is a very competitive game, and this can offset players completely. Stuff like this is frustrating, and might just put people off the game completely. If that happens, then less people will be playing flying, then no one's having any fun.
Anyways, sorry for the ramble. I agree with your idea Lizzie