Could the textarea on the edit field be made bigger? The space available often feels rather cramped.

I presume that the current size was chosen when a resolution of 800x600 was still the most common, but with the current resolutions of computer screens, I think it can be a bit bigger. If it fits on 1024x768, it should be fine

Screen resolution statistics for 2008: http://www.thecounter.com/stats/2008/December/res.php

EDIT: For comparison, here are the statistics from november 2000, when SL was first opened to the public: http://www.thecounter.com/stats/2000/November/res.php

I have changed the default size from 65x20 to 80x25. Users having changed the size previously have to update their UserPreferences manually.