I use healbot on my Death Knight (main)

It shows me in a very compact form the health.

I configured HKN to use the area of the health bar of Healbot on my main to heal the partymember.

e.g. Health Area party member 1 -> right mouse -> greater heal, left mouse -> flash heal, middle mouse -> renew

so basically I made the healbot work remotely on my priest.

The priest has also buttons for each partymember for GH, FH, Renew.

I have my priest always as party1 (from the tank point of view) (thus no FTL)
so tank view:

player = tank
party1= priest
party2=toon3
party3=toon4
party4=toon5

Priest view:

player=priest
party1=tank
party2=toon3
party3=toon4
party4=toon5

which makes the [target=...] on priest macros very easy.

So the healbot "on screen buttons" press a "real" button on the priest client. I use Numpad0-9 and CTRL+Numpad0-9 for that.
Code:
<Template SHealer>
  <If MouseIsOverWindowRect WoW1 %1%>
      <SendLabel w5>
         <Key %2%>
<EndTemplate>


<Hotkey MButton>
  <PassThrough>
// HEALBOT !
  //Bloodcloud
  <ApplyTemplate SHealer "358 515 125 25" "Numpad7">
  //Priestera
  <ApplyTemplate SHealer "358 550 125 25" "Numpad8">
  //Huntera
  <ApplyTemplate SHealer "358 590 125 25" "Numpad9">
  //Burnmana
  <ApplyTemplate SHealer "358 630 125 25" "NumpadPlus">
  //Daimon
  <ApplyTemplate SHealer "358 665 125 25" "NumpadMinus">

<Hotkey LButton>
  <PassThrough>
// HEALBOT !
//party
  //Bloodcloud
  <ApplyTemplate SHealer "358 515 125 25" "Numpad0">
  //Priestera
  <ApplyTemplate SHealer "358 550 125 25" "Numpad1">
  //Huntera
  <ApplyTemplate SHealer "358 590 125 25" "Numpad2">
  //Burnmana
  <ApplyTemplate SHealer "358 630 125 25" "Numpad3">
  //Daimon
  <ApplyTemplate SHealer "358 665 125 25" "Numpad4">
 //pets
  //Hunteras Pet
  <ApplyTemplate SHealer "358 705 125 25" "Numpad5">
  //Daimons Pet
  <ApplyTemplate SHealer "358 743 125 25" "Numpad6">


<Hotkey RButton>
  <PassThrough>
  // HEALBOT !
//party
  //Bloodcloud
  <ApplyTemplate SHealer "358 515 125 25" "Ctrl Numpad0">
  //Priestera
  <ApplyTemplate SHealer "358 550 125 25" "CTRL Numpad1">
  //Huntera
  <ApplyTemplate SHealer "358 590 125 25" "CTRL Numpad2">
  //Burnmana
  <ApplyTemplate SHealer "358 630 125 25" "CTRL Numpad3">
  //Daimon
  <ApplyTemplate SHealer "358 665 125 25" "CTRL Numpad4">
 //pets
  //Hunteras Pet
  <ApplyTemplate SHealer "358 705 125 25" "CTRL Numpad5">
  //Daimons Pet
  <ApplyTemplate SHealer "358 743 125 25" "CTRL Numpad6">
hope this helps.. More possibilities are possible with shift+ mouseclick to bubble e.g.