That's the main issue with implementing A:R, it requires lots of additional design. Also, last I checked, the rules aren't uniformaly agreed upon.
All A:R pugs and the eGO tourney have kept with a basic set of rules. Both teams choose to ban one class, and that class may not be banned in consecutive matches. Medic cannot be banned.
Match lengths are 20min long and got for 3rounds of 3 different maps(may be hard to implement on tf2c(40long single maps?))
Vacc is the ONLY weapon that is banned due to blocking minicrits from point capture.
5 players a team; up to 1 of each class on a team
Teams win either by mercy rule(difference of 7 points) or when time expires at then end of 20min.
If teams are tied, match goes into a GOLDEN round where the winner takes the victory.