Haven't had a raid yet since the patch but I've specced for drain.
But I have had a few issues with the speccs when training at the dummy or in instances. When I want to clip DL right after a tick (using Gnosis for this to see when the tick really happened), to refresh for example Haunt because it came of CD, it happens 1 out of 4 times that I click the button but nothing happens. I only have that kind of problem when I want to cancel DL. Don't use any macros with stopcasting for that because I think it should work without. Anybody else encountered that problem? Any ideas how to deal with it?