Thanks for the list, I'll update these after checking them out. The main problem is really that players aren't always in fantrax when they're signed/drafted so we don't always find they've been added to fantrax until someone tries to sign them. But yes we do ask owners to do a double check at the beginning of each season, unfortunately it doesn't always happen.
That and this year some teams weren't awarded their drafted players because their rosters are non compliant.
100% use spreadsheets to make sure players aren't taken, it's always the most accurate.