@SaitoHikari in regards to your question
Regen, yes unless there is 1 mob left in a trash pack and it's close to death (or a big pack where all are close to death) if the tank isn't good they might not notice it and then you get attacked by the next pack of mobs. Medica II, situationally good to keep up.And finally, probably the most important question: Should I REALLY be using Regen that much? I refresh it all the time during fights, but I'm starting to think doing that is a bad thing (it's probably why Titan went after me).
In that titan HM situation you described it is more likely that you cast medica 2, and then instead of sitting back and letting it work you also cast 2-3 medicas. I can't count the number of times whms did that on titan hm during 2.0 in my groups. Don't medica 2 until after heart, it's not needed, also shroud on CD (use first time after he lands the first time and you do your second aoe heal, might actually need to hold it slightly longer since dps can push it harder nowadays).
4 mans are an entirely different beast though, I don't have whm 60 currently but I have ast to 60 on my alt toon. What I do to get the most possible dps out is stack the living crap out of regens on the tank. As soon as they have agro established (sometimes it takes a while, so you might need to add a cure 2 in here to top them off before full dps) Synastry (Divine Seal) > Aspected Helios (Medica 2) > Aspected Benefic (Regen) > that AOE regen bubble thing (Asylum) > this part is ast only but Time Dilation (+15s to all those regens) and then that aoe stun (5 more seconds of regen plus 4 seconds of tank taking no damage) followed by as many gravities (Holy) as I can get out until I'm under 15% MP or the tank is under 30% HP > Essential Dignity (Tetra or bene if you have it) and then maintenance heals while I regen MP until fight is over. If the dps in your group don't suck the mobs will be dead, if they do suck the mobs are probably all around 60% because I can't do all the work, then I jump around not dpsing ONLY because I don't have the MP for it.
On my main toon I play as a tank, and when I see a healer who refuses to dps for whatever reason I drop tank stance and continue on like that. At least that way the healer has to actually do some work.
On topic finally.
I really don't understand why healers don't want to dps, they have the potential to put out 70% of a dps class (more in aoe situations if no aoe classes) as do tanks, so total of 3.4 dps class capabilities in any given expert dungeon.
If the healer doesn't do dps that drops to 2.7. Let's call 20 mins an average expert run with a healer dpsing. (I've been in fewer sub 15 min runs using DF than I can count on 1 hand, I don't know how lucky others are at DF)
2.7/3.4=79% of the potential dps of the group.
20/.79=25.2 minutes
So by not dpsing you essentially increase the time by 5 minutes and 12 seconds. If you do the bare minimum for experts each week to cap, that's 6 experts.
You have now wasted 31 minutes and 12 seconds of your time this week. If you do that for a year, that's 27 hours, 2 minutes, 24 seconds.
You have wasted over a day of your time by being lazy. It's bad enough that we are all wasting our time away playing this game, but you are going beyond that to waste even more of it only because you couldn't be bothered to push more than 2-3 buttons.
Edit: To anyone saying most dps don't do near 100% of their potential. I agree fully with that statement. However using that as a basis of argument is kind of shooting yourself in the foot. Because if most dps are doing 50% of their own potential (600 seems to be about average in most DF pugs I'm in, 1200+ from going in with people I know) your 70% just made it so the group is now doing 1.7/2.4 or 71% instead of 79%. From personal experience these 50%ers seem to be in almost every expert roulette. And all of those time wasting numbers just increased by about 35%.