Actually, the admin panel is a verbatimOutput panel. It could be improved to make it nicer visually and interactively.

Maybe we should add an option to limit the max number of options chosen in a poll answer, so the user does not select all of the answers.

Modularize the resulting Shiny app (the interactingan server app).
https://shiny.rstudio.com/articles/modules.html

I cant figure out how to get a unique ID for each user that accesses the app.
Once a user refreshes the Shiny app, it gets a new session$request$REMOTE_ADDR, ":", session$request$REMOTE_PORT.

Add an option that will allow audience to complete each interaction in up to XX seconds.

Shiny's textAreaInput does not have a maxlength attribute, this can be solved with

observeEvent(input$txt_area, {
  if (nchar(input$txt_area) > 160) {
    # warn, delete chars?
  }
})

but, how much computation does this consume?

Add a reset button to the admin panel, so the user responses are cleared.

Add quizzes as a new interaction.
It would be a set of polls withs correct options, however, a leaderboard or something similar should be added to the server.