checks the amount of total visits and its traffic rank
Elizabeth, please give more details on what do you mean. Do you want to see the predictable traffic based on website rankings?
Probably a measure of the amount of impact that an improvement in ranking will produce. i.e. This URl saw x keywords improve an average of Y positions. Based on the popularity (search vol) of these terms you can expect approximately a z % increase in traffic for this URL
Nathan, you suggest a good feature. I will create a separate feature page for that. I guess you mean another option than Elizabeth.