Playing the audio only works if the PA system can be understood
But having multiple big screens and having penalties, free kicks, offside etc. all printed on the screen would be massively beneficial to new and old fans alike.
Regarding access to players, I know not all players will like having the public in their faces asking questions, but at the same time a lot will love to engage.
Wasps used to ask kids who their favourite players were. Typically you'd get a high scoring winger, the fly half, the captain, or maybe a number 8.
You would never expect to have kids calling for a lowly blind side flanker. Enter Ashley Johnson.
Instantly noticeable, kids could identify him on the pitch anywhere, a genuinely nice guy who was happy to chat to the kids afterwards etc.
I'm not saying that all players need an identifiable hair cut, but as VV says, for new fans to create an attachment to a team they need to know who they're supporting.
If you get to see and meet these guys in person you're much more likely to make that connection