I think it would be nice to be able to see the condition and any notes and comments about a particular coin when using the "View Swap in Excel" feature.
For example, If I have a coin that has an identifying mark (particular tone, stain scratch, error, double die stamp, etc) and I place it in a swap, then it gets swapped away, I can remember where it went.
A better example: I have three coins of the same type - one I found in my change at the grocery store, one I inherited from my Grandma, and one I got in a swap from Whoever88 - I will put that information in the private comment when adding the coin to my online collection. Then, when I swap it out to another member and download the excel sheet, I can tell whether they got the one from the grocery or the previous swap with Whoever88 - or make sure they don't get the one from Grandma!