My list of suggestions.

[rush]

[search]

1. quickly exclude phrases in search
2. option to quickly exclude from search the items you already have.
3. same file names come up more than once in search
4. tons of stuff that don't have anything to do with your search comes up. Stuff that has none of the keywords..

[other]

1. option to include subfolders in folders you want to share rather than having to enter each folder.
2. What if you want to set upload speed to 100 kb rather than 43 kb or unlimited ?
3. Warning when Restore Default option is chosen.