Have any of you thought that perhaps the 'versatility' addition wasnt related to mindlessly spamming a single spell indefinitely with nearly no regard for what's actually going on? automatons!
Here's your versatility, and your 'hey, healing is only half boring now':
Situation: You are tank healing as a holy paladin in a yet nonexistent 10man. your other healer is, say, a druid.
Boss aoes.
You have already SS'd the tank, buying you time to flash a single non-tank, helping the druid and conserving their mana (as flash is the most mana efficient in a ratio comparison). The Hot, not strong but sufficient, bought you that flash on the dps, and you can now lead off your return to the tank with a shock, a flash, and a return to holy lighting. you remember to SS and flash to maintain the HoT and the absorption effects, effectively increasing your total healing by the HoT value when under single-target circumstances.
Strategery.
As for mobility, it does help.
==pretend you're in an idealized arena (I know this is far from the truth, but i really dont care). you have a dps (omai!) who gets separated (dipshit!), though they have to keep out of a kite. you can SS them, flash them, and then run while throwing a shock, taking far less time than, say, casting flash twice and standing around while you yell over vent that your partner is a fucktard for getting out of range, that your class sucks, and that you have no options whatsoever to keep them alive while moving to keep up with the battle.
think. I know it's hard, hearing potential solutions to your problems from a ret, and actually having to think, but it's time.