I like the new feature @ MinePeon 0.2.2: % of Reject & Discard. Also the "more space" for pools.

Going up, from 20 to 30 minutes of Donation Time.  

Still missing the prioritization of pools "on the fly" and buttons like Restart and Quit, as in old miner.php page.

Going down, from 30 to 25 minutes of Donation Time.