[sirann]

1.

self.HealthBG = HealthBG

Noted.
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2.

self.Health:SetHeight(29)

Noted. Will add self.Health:SetPoint('BOTTOM', 0, 3)
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3. Several problems in here:
A. I'm assuming global name is PlayerLeaderAssistFrame and PlayerLeaderAssistTexture, will remove
B. Will use oUF elements and change texture path
C. The texture paths do work. If they're not supposed to, IDK why, but I can assure you they do.
D. That is bad copypasta. But it did work, so I didn't catch that.
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4. oUF also already provides a combat indicator element and a resting indicator element

Noted. Will use those and change textures again if needed like assist frame.
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5. However, oUF does not provide any elements named "BuffBars" or "DebuffBars"

This is from an element you rewrote for me, oUF_AuraBars. I still use it, although I think I'm literally the only person to do so. I just couldn't deal with elkbuffbars another god damn day.
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6.

oUF:RegisterStyle('Terenna', Shared)
oUF:RegisterStyle('oUF_Terenna_Player', UnitSpecific.player)
oUF:SetActiveStyle('oUF_Terenna_Player')

so inside of my shared function put:

oUF:RegisterStyle('oUF_Terenna_Player', UnitSpecific.player)
as well as other units with the UnitSpecific.insertunitnamehere ?

And then just have oUF:SetActiveStyle('oUF_Terenna') at the bottom of my code outside of all functions?