Below is a table of user needs we discovered and solutions we or the customers suggested. Some of the "missing" features people complained about are not missing at all (such as auto-complete or syntax highlighting) but the fact that people didn't know about them points to a discoverability issue we believe we can address through design.
Needs
Suggested Solutions
Users need a reliable way to save their queries frequently
Autosave, Persisting & Complete History, Persisting Un-run queries after disconnect
Users need a more efficient way to type
Auto-discoverable Autocomplete, Customize shortcuts, more visible syntax highlighting
Users need a process to share query output with others
Copy and Paste into Excel with proper formatting, Export button to MS XML
Users need a way to quickly input content into pgAdmin
Edit within graphic table
Users need query output to be stored to reuse results
My main concern is making the right decisions on what to change, and focussing efforts in the areas where we gain most benefit. Of course, the resources to do the work are also critical - the current team already have a good years worth of work in various additional features and improvements.
Absolutely our concern as well which is why we don't want to work in a vacuum.