a. we take 6 healers to our 25 mans, some dps race fights we go down to 5, hell, hodir hard mode we went to 3 healers and downed him last week. U wont find to many guilds that lake less then6, and have 1 or 2 that can dual spec dps on some dps races and yogg (not a lot of heals needed on yogg)
b. if it's a 1 tank fight, we have 2-3 healers on mt 2-4 on raid healing. ON 3 tank fights we have 1 pally on each tank, rest raid heal. So like freya each tank has his own healing pally (yes, we are odd guild, we take 3 holy pally every raid, 1 shammy, 1 priest, then either a priest/druid)
c. we have done fl 4 up (nothing to do with heals), xt hard, council medium. hodir hard. freya +1. so far. yogg -1 try this week as we had 2min on enrage last week we feel we can do it.
d. see above
e. maybe, almost all of our guild is 12-15 out of 17 slots in 226 gear or higher.
f. i have run a full 10 ulduar like 1 time for achivements and one time for like 5 hard mode achievemnts. other then that it's 25 ulduar every week, yogg has went down something like 5-6 weeks in a row.
g. u don't carry anyone in 25 man ulduar hard modes, if u can't cut it, u can't go.
it's not hard to get. at 1.5 seconds with 18k HL u can heal 12000 hps on tank, preemtive heals. at 1 seconds u can flash for 8-9k so 8500hps (this is the high end crit amount same goes for low end numbers) considering pallies overheal 60-70% when preemtive tank healing, doesn't seem like an issue. add in an instant 7-10 k hit for when tank gets wtf pwnd and a 50-60% chance at an instant flash or 100%hl crit at 1.5 seconds and u don't need HL spam to keep tanks alive.
4 piece ss bonus does a nice job of removing damage taken, and it gives more uptime on flash crit, meaning if u have 4 piece t 8.5 and keep ss up, and flash a lot, u will crit most of the time. which is the pt. with enough haste, and smart playing (keep judement every 60 sec, ss 30 sec, hl every 15 sec to keep time down to 1.5 cast, beacon 100% up, usually on mt in case u need to fast save a guy with your shock and heal tank at same time.
if u think i have no idea, look up darthceltic on armory. I'm the only guy with that name, go figure. U can see my gear, my chants, gems, talents, and my hard mode achievements. I'm not elitest or even think i'm a great player, but i'm good enough to know pallies don't have to HL spam to work.