Yellow card / Red card usage at 2004 IRI

I think the card system is great....too many times I have seen over the years teams disqualified for something that they were warned about several times and brushed off (then complained afterwards) and sometimes I have seen teams disqualified w/o any kind of warning because of what the other teams have done similar. Now with the new card system, teams will physically see the warning and know that the referees are serious truely serious. They will have a good enough warning and have no reason to complain about a DQ coming out of nowhere. Excellent idea and Id like to see it used in the upcoming FIRST season.