This is a comments that could be applied to all your router, but if it could be applied to this model first... I appreciated because it's the model I use :)

In advanced tools you have an utility to collect traffic stats per client. very useful, but this could be better:

1. You already be able to know the computer name in DHCP. Why not adding this information in a column. You show IP and MAC. DNS name  is sometime more useful !

2. Be able to sort columns, like "Total bytes". 

3. Be able to export (in CSV)

4. Have a total traffic information (all clients) 

Another very interesting tool that I really want... that could give  a kick-off to the competition and also be very useful is a "Real-Time traffic bandwidth". With modern HTML code with no Flash or Java, it's possible to show live data. At least, just a "IN Mbps usage" and "OUT Mbps usage". 

Regards !