Recently got a Flint 2 MT6000 and so far relatively impressed. Always wanted to jump on the OSS bandwagon but didn't want to risk bricking something. The features and abilities of this router are fantastic for more advanced home users.
Anywho, one thing I do miss are status leds. I do like the 'professional' aesthetic and appreciate the non-gamery lack of rgb, but it is handy to see if lan cables are properly connected and linked, and it's also handy to know that the radios are broadcasting and the router can see the internet. A small handful of leds can't add that much cost to modern products - and most routers offer the ability to turn off leds either by schedule or entirely by menu options. It appears that Openwrt supports led control, so that shouldn't be an issue. Sure, you can always log into the device and check these things - but when trouibleshooting it's often easier to just glance at the router to see what it's doing and go from there.
Just figured I'd toss this out there.