Been working on this for a while now, inspired by different healing UI's, and based my oUF layout haevily on ALZA's layout. Practically, it's just some minor rewrites of ALZA's layout, changed positions and added buff-filter for the target frame.
Here's what it looks like:
OOC, target, crit heal:
OOC, party, normal heal:
OOC, Semi-raid (Arena):
As you can see in the first shots, I've filtered a lot of buffs from the target frame, so that only priest-buffs show up. This is done because i hate having to look my healing targets buffs through, to see if I've got a PoM or a shield up.
I've also just added a ItemRack script, that changes my gear when i change spec. Along with that, I've got a KGPanels frame in the lower left corner of the minimap, that indicated what gear I'm wearing (D = DPS, H = Healing, P = PVP, F = Fishing), and toggles combat text and sound depending on what gear I'm wearing.
The raid frames expand downward under my player frame, as seen in the last screenshot.
C&C welcome, just PM me.