I would play for this team on the proviso that the supply of canes and monocles was included in the subs.
It would have to carry on to the field as well:
"Referee, please don't give this fellow a yellow card. His tackle on me was a little spirited, but he has assured me that no malice was intended and it would be unseemly to doubt his word."
When the opposing team scores, polite applause should be given and perhaps some calls of "good show!" if it was a skillful goal.
It would certainly be an interesting change in football.
Someone allegedly summed up two sports by saying "Football is a gentleman's game played by barbarians. Rugby is a barbarian's game played by gentlemen". I think it's probably apocryphal.