I'm doing some troubleshooting over a WAN, and a long-running query can take quite a while to complete. This is somewhat painful because Squirrel does not display results until the query is completed.
It would be nice to have a "Preview" button next to the "Cancel" button once data rows start being received; it would open a read-only grid of the latest 5 (configurable?) rows received from the server. This would allow a quick taste of the returned data before the full result set is received and displayed in the result grid, rather than having to wait tens of minutes (or longer) for the results.