The ability to enter comments for comics is great. (I often use it to note mini series.) It would be even greater if I could search my collection and get a set of results that included titles with notes that meet my search criteria. In particular, I find this useful if I'm looking to fill in gaps to a crossover series and need to see what I have.

As an extension of this, it would be grand if there were some way to store mini-series titles on the main database (versus just user entered notes) so you could see all the issues in a miniseries regardless of what title they're in.