Only a suggestion:
The ball boy and lines person should do more than just sit there.
At least have the lines person move their mouth when a call is made.
The ball boys should retrieve the balls and roll them towards the server.
It would make the game more realistic.
The stands should also be packed with people.
Different people should clap. It is boring to see them all clap all the time.
Some should also get up and cheer when a great play is made.
Anyone else feel the same?