Trip Reports are far and away the best part of FT for me. I do prefer to have the reports hosted on FT though. Makes it easy to read and to keep track of changes/comments. Reports that are only about the attractions don't bother me at all.

One thing that would be nice is an index of reports. I often want to find a report about a specific airline or class. Search never really turns up anything useful -- for me at least. It would be daunting to create, but the index would be a great resource.