I would also like to see this added. I currently use the GearScore addon, but it is difficult trying to correlate two different rating systems. I really like the GearScore, but I think it would be so much nicer having one from Wow-Heroes. Hopefully in the future Wow-Heroes can be the standard on gear rating that everyone refers to.
I use Gearscore as a raid/dungeon leader - a quick check is basically gearscore*.5. That usually puts me within a few dozen points of Wow heroes. I have a good basic idea of what scores are needed for which raids. I would love to see an addon that does it remotely. Currenly the only remote one it does is if they are signing up in the LFM. I would love to be able to right click on their name and see this there.
as an ex-GM current raid leader and second in command of my current guild I would LOVE an in-game gear check app using the stats of the site I currently ALT TAB to and have a win 7 desktop app for. would just make life easier on me.