Technically as hpal in Cata, playing better was more about "having good proc in the right situation".
X% chance of having a free holy shock.
X% chance of having a crit on holy shock.
X% chance of having a free WoG after using one.
And with all of that, you could save your dispellable wings indeed if you were better.
Basically it's dispelling the nova on your warrior instantly and having a sacred cleasing proc instead of spending 3 gcd to have the right thing while some other debuff are added in the same time.
I miss some of spells from older xpac, like hand of purity, denounce for example.
What i miss the most is customization.
I loved being able to change stats and stuff, glyphs etc...
Talents have always been meh for me. You changed max 1 or 2 points compared to others.
I really don't understand your constant rant about hpalas in cata, they were t1 the whole fking xpac and were beyond godlike on ATR