I usually bring up two Bonemen when I take on a dragon. Their archery is decent, and good support for Derkeethus. And they tend to stay away from the jaws of the beast, which will kill just about anything I counjour in one snap, anyway.
Has my attire changed? Hm. Not really. Aetherial Crown has found its way into my normal rotation, that's probably the biggest thing. I have the Ancient Falmer armor all smithed to perfection and enchanted for a Nightblade type build but I rarely use it. It's sitting in my Markarth home at the moment on a dummy.