Charisma

[strawman]

Curious about the effects of charisma on charming and wondering if High Elf is really the optimal enchanter race, I went on Github and looked at the source for EQEmu. In zone/spells.cpp starting on line 4594, I found this comment.

Charisma ONLY effects the initial resist check when charm is cast with 10 CHA = -1 Resist mod up to 255 CHA (min ~ 75 cha)
Charisma less than ~ 75 gives a postive modifier to resist checks at approximate ratio of -10 CHA = +6 Resist.
Mez spells do same initial resist check as a above.
Lull spells only check charisma if inital cast is resisted to see if mob will aggro, same modifier/cap as above.
Charisma DOES NOT extend charm durations.
Fear resist chance is given a -20 resist modifier if CHA is < 100, from 100-255 it progressively reduces the negative mod to 0.
Fears verse undead DO NOT apply a charisma modifer. (Note: unknown Base1 values defined in undead fears do not effect duration).

I don't know if this code has been changed for P99's servers. If it hasn't, this suggests that stacking charisma beyond a floor of 75 isn't as important as the wiki suggests for enchanters (but that it is important for necromancers).

Searching this forum didn't turn up a lot of discussion on this topic. Is resist reduction on the initial casts of fear, charm and mez worth giving up the extra points of intelligence?