I like comment cards, I think they should be encouraged. We had success making changes based on a card. As far as the team number issue. You can read through many permanent markers depending on the print underneath. A better approach is to allow space at the bottom of the card and have the reps cut the bottom of the card off removing the team number.
I don't know if I like spacing out turn in times as much as it could make things easier. If you take the crazy insanity of the small turn in window you remove a lot of what makes this thing we do so much fun.....and insane.
Scramblin Eggs BBQ Team....Two Eggs and a backwoods...bbq diversity....