Just been pondering to myself (bet you wish you'd never asked) and have come up with an ickle list.
1. Climate ticker on homepage: Could it bea rolling banner to show other areas too such as Auckland and Christchurch, maybe even Hawkes Bay and Invercargill too?
2. Area Info: When was the last update on these, there is barely any info on SI. Perhaps there could be a willing new research addict who wouldn't mind helping out. Also are the Average Salaries in GBP or NZD, seems like GBP.
3. Could we have a random ramblings section on the Forums for jokes and inane comment etc.

Just thoughts