Forgot about Serendipity, but I dont think that has a great effect, doesn't get used that often, or does it? at least not that much as raidhealer ^^ except for alysrazor hc, where you can just spamm FH when needed...
Yes, the fact that HC is passive makes it much easier managable.
But hey, we are so uber super duper pro players that we can watch out for perfect long-mana-gain-CD management, always use the correct heal (hps and hpm wise) for every situation, heal mates that do something wrong, whilst not doing anything wrong ourselves, never overheal, always anticipate incoming dmg, precast befor every big dmg hits, yell at our mates to stop failing, raidlead, forsee dmgspikes on tanks, not lose sanity although staring at green jumping bars for hours on end, never touch a fire, bake cookies and so on.
So we can assume, that we are also capable of watching out for the rapture timer, wright? ;-)
And yes, as long as it's not in a negative context (concerning me), feel free to quote :-)