yep to communication being huge....a heads up helps a lot, even if I'm anticipating it....
for judging healing output, I would recommend worldoflogs.com
the way that website's logs work, it includes things like uptime on shields, and actually includes dmg reduction and shields as healing in disc priest stats....not uncommon for me to see my stats near bottom on recount (wonder what the heck I was doing during the fight, lol) and then check my log and see what was going on....also seems to quantify healadin stats better...but most importantly, you can tell who was healing whom and when and with what spell....that is huge....especially for exposing the "whack a mole" or situational needs....I run with healbot, and it takes intentionality to make sure I'm aware of the environment (thank god for dbm), but I find that because I run healbot all the time, I'm virtually automatic with it, so I can be more aware during ony fights, etc....so there are advantages to just about any set up, depending on how you work it...worldoflogs helped me a lot to see a much better picture of how I'm healing when and where I was screwing up...much better tool for diagnosing than recount, which does at least tell you what spell people are casting most on whom, but that's about it...
as for helping healers, knowing your own limits as a tank is nice, but really just working together, owning it when you screw up a pull, checking before a big pull, knowing when something is going to be a big pull, etc...I enjoy the challenge sometimes, and more than one tank that I run regularly with tries to wipe the group on heroics because we've worked together enough that we know what the other one is capable of, and we're geared way beyond it, so its fun....once again, lots of time together, lots of communication, etc...invite healers consistently....get to know particular healers....and know your stuff, and let the healer know where you're getting your info...how do you think I found this website? lol

