Lockspanner, your image isn't showing for me, unfortunately. 😦
Three weeks in to the Emerald Nightmare raid being opened, with just two hours once a week, we have had a new boss down each week! We repeated our earlier successes by one shotting both Nythendra and Ursoc last night, and downed Dragons of Nightmare on the 4th attempt! 😎
I suspect that unless we consider expanding to three hours with a break in the middle, it will be hard to press much further if we continue to enter a fresh raid instance each week and visit the same bosses for loot with just one night of two hours to work with.
There are 12 Gnomes in there, but the Dragons of Nightmare hang out in a pretty dark area so it's hard to see (maybe Forbs can do the image processing magic if it's too dark) ... we had one Gnome that unfortunately had to leave before our successful attempt:
http://i.imgur.com/Qg1BmbL.jpg