1.) Cone/narrowing-square shaped guides on the included backplate so the user doesn't need to tear apart everything to try to plug in a mic/speaker/ethernet/usb cable. Have you ever tried plugging an 1/8" jack into the back of a PC you can't see? The guide doesn't need to be bulky or huge, but trying to reach behind a PC under your desk to plug in anything is a nightmare when you can't see what you're doing. Which brings me to...
2.) Include a *powered* remote USB/eSata hub! Isn't it about time that we don't need to desk-dive or buy additional accessories to plug something in? I'd gladly pay a bit extra to have my mobo ship with a well-designed multi-port hub that is powered directly from the mobo (via an extra cable from the power supply, if necessary!). Include a strip of 2-sided tape, in case I want to mount it on my case/desk/whatever. Cheap to manufacture, and a necessity for anyone with more than 1-2 USB devices. Sure, an on-board USB header for front-connections is nice too, but not all case designs have them. Take it a step further - maybe in a "Premium" package, include digital readout for chip temps, fan speed, manual fan control, etc. Yeah, there's software for that stuff, but if I want to crank up/down a fan mid-game (or mid-business call), a knob is intuitive - hunting in software isn't.
3.) Lights on the mobo - ok, gimmicky, UNLESS they are practical! You have a 2-digit LED for diagnostics - how about another (3 digit?) for bios/app/button-on-mobo selectable CPU temp/Voltage/multiplier? or a small, backlit lcd with some scrolling info? An overclocker squeezing performance out of a mobo on a test bench would be grateful! Also - allow the diag one to be switched to northbridge/zone temps. Diag is only helpful when something is wrong... otherwise, who cares that the current runstate is 3F?
4.) ACCESSORIES!! Overclockers are geeks (ok, well, I am), and geeks like geeky (and practical) accessories. Some examples:
- small rubber grommets for the mounting holes to isolate the mobo from the mounting pegs - protect the mobo, and isolate fan vibration from transfer to the case.
- zip ties/clips for cable management. Everyone has their own preference, but a few extra zip ties never hurt anyone.
- USB powered white LED - useful for build, useful after build.
- Stickers, keychains, bottle openers, whatever!
- One-time application of Arctic Silver for the CPU!!
- Other geeky stuff...?
5.) Include a (reusable) USB drive loaded with some utilities (like, maybe a barebones bootloader that lets you adjust voltage/clock/multiplier, and runs CPU/GPU/RAM/bus stress tests. How nice it would be to get through that before moving/building the rest (DVD/BD/CD/HD), or doing an OS install.
5.) Best for last - STABILITY and SUPPORT. Board should be stable for intended use - that's a given. But if it isn't, keep the consumers updated on a fix status, whether it's an RMA, firmware update, bios update, etc. It's bad when things don't work right, but it's much worse when the company doesn't seem to care.
Figuring out what a user wants in a premium motherboard is easy - Pack in as much of the latest everything as possible, strip out the old junk, and you're done. It's the little conveniences (or lack of inconveniences) that sets apart any product. If you can make me feel like a 6-year-old on my birthday when I open the box, people are going to hear about it.