Just a few things:
Buffhead and
Squared - or
Enemy instead of Squared, dunno whether Squared still(/again) works properly.
(QoL:
AnywhereTrainer, I'd too suggest one of the many addons that display CD timers and such, but thats is totally optional).
Additionally, if you toss out some dps - if you have an opportunity to do so, or if you wanna buff up your heals (casttimes > valuees [.ab ex, rotate at best: lifetap -> heal -> lifetap -> heal])- you wanna toss it on dps (your dots, even in full heal spec, tick for reasonable amounts on squishies, espeically if you have a SM tagging along debuffing their resistance), instead of tanks - their avoidance and general tin-can'ness completly negate your loldps, as you've noticed in the video.
Tanks you can (just detaunt, if need be - mostly its deftards, so you might wanna save the detaunt for dps engaging you - and) ignore for the most part, BGs you might wanna kite a little bit, depending on whether or not they run the HD.
Abbd.: Its been a while since I played my AM, dunno what exactly is being fancied right now, but that might be a good start:
HD (utility), detaunt tactic (for pugging), lifetap tactic (mandatory in all specs, since .ex ab)...