WowAce

What is the enhancement in mind? How should it look and feel?
As a tank with close to 1.5 million hp in raids, it would be really nice to see my health to more than 1 decimal place. I cannot find any way to make the health text to read as 1,5XXk or even 1,5XX,XXX which would be a lot cooler than 1.5m.

Please provide any additional information below.

It's hardcoded, the main X-Perl localization file can change the value prefixes.

Warning : I didn't actually tested, so I don't really sure the changes about I posted here do works...

Finding the "localization.lua" in the XPerl directory. And you can find some line looks like... (PS: If you're using other locale, please find the other one that match your WoW Client's locale, like if you're in deDE locale, please editing "localization.deDE.lua".)

XPERL_LOC_LARGENUMDIV	= 1000
XPERL_LOC_LARGENUMTAG	= "K"
XPERL_LOC_HUGENUMDIV	= 1000000
XPERL_LOC_HUGENUMTAG	= "M"

If you want the huge one showed K, just change to...

XPERL_LOC_LARGENUMDIV	= 1000
XPERL_LOC_LARGENUMTAG	= "K"
XPERL_LOC_HUGENUMDIV	= 1000
XPERL_LOC_HUGENUMTAG	= "K"

But...

XPERL_LOC_LARGENUMDIV	= 1
XPERL_LOC_LARGENUMTAG	= ""
XPERL_LOC_HUGENUMDIV	= 1
XPERL_LOC_HUGENUMTAG	= ""

I don't know if it ever works...

Also if your frame's width didn't enough, some parts of value string will bypassed, showed something like "123,456,789/12...", it's why the prefixes doing in first place.