Summary

Easy, relaxed healing. Probably not as good or efficient as pro builds, but it gets the job done with less stress for the healer.

You could probably get by with only and .
All the other stuff is mainly to shore up a bit the damage dealers standing into telegraphs, an "oh sugar" button, and most importantly semi-random stuff to make the rotation less boring.

Rotation

main rotation:
builds up actuators, reduces cd on flash, and is at T4 because sooner or later you'll run OOM and then you'll be really grateful not having to spend focus on it.
is the "medium" heal, the more you spam emission, the more you can flash. It's not strictly necessary but since this is a "have fun and relax" build, it helps to pump out more healing.
is your actuators spender. It recharges shields, it damages enemies, it toasts bread, and it's at T4 because when the tank has mitigation you can go chase that spellslinger who's dying because he stood way over there out of reach.


secondaries to fit inside rotation:
tops off people, and helps with the aforementioned stragglers. It's not at T4 because this way you can cast it every 12 seconds and just leave 'em do their jobs.

is at T8 because of flexibility. You can use it to heal a group of damage dealers, kill adds attacking people, or support the tank. Your choice depending on the situation.


other (optional, actually) stuff:
is your "oh sugar" skill. Tier is the points you have left, and you could even keep it at base.

is the most difficult spell to use, because you have to make your group understand that when they're wounded they should go stand in the yellow cube. Easier said than done. Still one or two people usually gets it after a while, and it frees you to go heal more important people. Or watch the scenery a bit. Or jump around. Did I mention this is a casual, relaxed build?

gives you back focus. Try not to use it under 250 focus or you'll lose the benefits of T4 Emission. Or just use it when you finally notice you're at 10 focus, it's a cool skill to have either way.

Other interesting options:
comes in useful if the damage dealers are berating you for not interrupting (I'm not really sold on stopping healing to go CC a boss, but there you go)

is nice to go heal someone who's too far away, or get the hell out of dodge.

AMPs

I left a lot of free points, feel free to add in whatever you like.
Strong second tier AMPs are Support->Armour Coating (you have to heal less), and Support->Emergency (better crisis management).
A couple interesting third tier AMPs are A/S->Power Cadence, and Support->Runnin on Empty, but they are a mite dependent on playstyle.

First tier:
Most stuff is good, so go with whatever you feel lacking at the moment. More support, shorter CD, less focus use, whatever.

Second tier:
Utility->Regenerator: this I feel is important, because I often neglect to watch my own health, and... well, relaxed casual build. It also helps in normal PvE
S/U->Attrition: less focus management = more fun.
A/S->Scalpel!Forceps!: the name is hilarious. +9% power helps a lot too, in normal PvE as well as dungeons.
Support->Protective Surge: free heals are good. Free heals you do not have to worry about are better, and help you relax and take it easy.
Support->Reboot: besides the "oh sugar" factor, it helps when you forgot about that spellslinger running around, and have to scramble to catch up to him.

Third tier:
Support->: see the rotation
Support->Hypercharge: free shield heals, on an ability you're going to use anyway. Less stress, better crisis management, double win.