Right now you can show the Top 10 or XX interfaces with over YY number of errors or discards, inbound or outbound.
The problem is that the number of errors or discards is not really an issues. It's the percentage of the total that matters. If I have 10,000 errors over 24 hours out of 10,000,000,000, that is a number I can live with. Right now it turns red if over 1000.