I wood like see more support four IPv6.
Supports up to 12K Jumbo Frames.
Bandwidth Management: Allow multiple network activities (FTP, Game, P2P…) to work smoothly at the same time.
Device discovery.
Save/restore configuration files.
Intrusion detection including logging.
Logging: Dropped packet, security event, Syslog.
Filtering: Port, IP packet, URL Keyword, MAC address.
Err...I think you meant to post this in the suggestion area. In fact, some of your suggestions are ALREADY in the router. But, some of the stuff you are asking for do NOT belong in a gaming/home class router, but more so an enterprise.
In fact, this router has absolutely NO support for IPv6. And Jumbo frames do not work too well on home devices. Doesn't make much sense to use it unless it's a huge building with multiple levels and you need to distribute information quickly and efficiently. Even Lycan has said it...Jumbo frames won't make a difference.
Bandwidth management is already there...it's called QoS. I don't have any problems gaming and using FTP or P2P at all.
Device discovery is there too...it's called UPnP.

Those last suggestions you made, even the saving of config files is ALL here too...even the ones below that!
But again, it's an enterprise class device you are looking at more-so, than the DGL routers.