I’ve just added a “USB Storage” option to the Find-A-Router tool. This will allow searches for routers that have a USB port that can be used to connect a USB Hard Drive or flash drive etc. At this stage there’s not too many products with that feature but it seems to be gaining popularity. I certainly get plenty of enquiries for products with that capability anyway.
I’m also considering adding IPTV but I think by the time I get to that one it will be a fairly standard feature across the board anyway. 
Another one could be IPv6 but because Internode is the only ISP offering it at this stage, the router manufacturers aren’t in a big rush to add it. The only routers I know supporting it so far are higher end products like McAfee, Cisco (not the cheap stuff so far), Nortel etc.
Any other suggestions are welcome.