So the upcoming update/patch is supposed to include a fix to the bone dragon nightmare. For the past couple weeks, and until that point, I have been and will continue to completely boycott any defense team with bone dragon in it. No matter what trophy or glory bonus, I refuse to fight the bugger.
I know there are those occasions that all three options have BD in them, and then I just take the easiest option, although one does have the option to use gems to repack.
It may not make a difference, most people may not care, but this is my stand, and I'm taking it.