I'm not sure if its Bongos2 or CTmod that I'm using for my buffbar right now, but either way I made it nice and small and put it in the corner by my minimap. I like it. I can get the info when I want it and it doesn't interfer with my view. However, I am constantly missing out of Nightfall when it procs. I would be interested to hear how other people deal with this problem.
I really want to avoid making my buffs large and obtrusive, I like a nice clean UI. In my perfect world, when Nightfall procs, a symbol would appear just above my casting bar, which is located just above my action bars at the bottom of my screen. Is there a mod that specifically deals with Nightfall without a lot of other crap thrown in?