propaganda could be done right after trials... and only by the Master/General of the element... then the winners get to use the bonus cards only during the auction phase
Just a random thought... Also, I don't think that one person should make a banner for multiple teams.
I guess it depends why we have Propaganda in the first place. Personally, I think we should move in the opposite direction, making it LESS restricted if possible. Imo Propaganda is about having fun celebrating and showing off your element. I think the rules should be very open and flexible, designed mostly to require a certain amount and quality of material, but imposing few restrictions on it's exact structure. Basically, take the approach we do with speeches, and apply it to all of propaganda. Compliance with unnecessary restrictions sucks some of the fun out of the creative process.