Over-healing should not generate extra threat

[HoneyBiscuit]

1. Tank pulls
2. Tank takes some damage
3. Start casting cure
4.a Tank is building threat
4.b Tank is taking steady damage
5. Cure casts
Take a moment to reflect. Can the tank survive 4 seconds without another direct heal?
If they cannot, return to step 3.
If they can move onto step 6.
6. Cast Regen
7. Stop over healing and L2P(repeat as necessary)

[lxSch]

1. Tank pulls
2. Tank takes some damage
3. Start casting cure
4.a Tank is building threat
4.b Tank is taking steady damage
5. Cure casts
Take a moment to reflect. Can the tank survive 4 seconds without another direct heal?
If they cannot, return to step 3.
If they can move onto step 6.
6. Cast Regen
7. Stop over healing and L2P(repeat as necessary)

I do a bit different, maybe it will be useful for someone. I will write it in a manner of tactics.
0. No Stoneskin on self? -> Stoneskin self.
1. Is pull for 5+ mobs? -> Pre-cast Eye4Eye.
2. Is pull for 5+ mobs? -> Use DS.
3. Did tanker Flash/Overpower/similar aoe? -> Use Regen (Regen ticks for 300-500 first heal and tanker will have easier time taking threat from a loose mob).
4. Is tanker below 50% hp? -> Use Cure + Cure 2.
5. Is DS about to expire? -> Cast Regen.
6. Are there at least 3 mobs alive? -> CS and Holy them to death.
7. Is tanker below 50% hp? -> Step 4.
8. Will fight go on for at least 10s? -> Cast Regen.
9. Dont have mana to cast a Cure? -> SoS.