The query history is a very useful feature, but it would be much more useful if it persisted from one session to another. I would also find it useful if it were shared between connections. It is common for me to perform a query on a test database and then need to use the same query on a different connection. Cut and paste works for this in a limited way, but if I am doing the second query later, then having a persistent history across connections would be very handy.