WowAce

What is the enhancement in mind? How should it look and feel?

Expanding EH to T(otal)EH or even replacing it (EH is a trivial solution to the TEH formula when magical and bleed damage factors are set to 0).
TEH, (sometimes referred to as N(ew)EH or EH2) details can be found here:
-http://maintankadin.failsafedesign.com/forum/index.php?f=6&t=26831&rb_v=viewtopic
Additionally an addon implementation (with a different scope to TankPoints) can be found in the addon TankTotals here:
-http://wow.curse.com/downloads/wow-addons/details/tank-totals.aspx

Please provide any additional information below.

I realize that even the original EH implementation in TankPoints comes from a different author and it was left in the addon as a courtesy by Whitetooth.
So I make this request with humility and I'd understand if it's not something he would consider spending time on.

However I find the TEH value very useful especially with TankTotals ability to derive magical / bleed damage factors from the actual incoming damage that lead to a tank death.
The ability to get a quick view on what TEH number would have prevented said death with the same incoming damage and healing profile is invaluable.

I would very much like to see a TEH section substituting the EH one in the charsheet and more importantly
a TEH section added to the calculator where you can input bleed, magical and physical damage factors in the form of % of the total incoming damage.

Thanks for considering it.