In terms of #16, it didn't work because it overshadowed elf (as ant discussed). It was a neat idea but doesn't really work in practice sine the stats are very close to each other. I'll try to think up something else though or maybe we will try to aim to change how INT works for spells so there is more of an effect to help gnomes too.
could maybe each int point add an additional 0.4 damage. seems like an odd number, but 20 int gains 8 damage, 23 int would gain 9.2. its pretty close to what 1 extra int would have added. could be like .35 and make gnome 23 int gain 8 damage as intended, just looked better as the flat 8 gained at 20 int.
as far as what i meant by everything above;
in a mage fight ling cant realistically win unless swatting each other with sticks. (10 23 18 20 10 21 is the best mage option they have, albeit it is weird)
a goblin in practicality can +1 str and sit at 20 22 20 and get nearly identical MR to a human/helf( in the scenario as a cav or zerk for example the human can realistically only select +1 on wisdom to set it apart slightly +1 wis isnt really practical on a warrior build as youd just pick a dwarf) im not 100% against that this happens i just feel human is under utilized and doesnt have that wow factor unless its a class that benefits most from potion use(cleric/mage)
gnome taking a -3 alloc hit will cripple everything that is good about alot of their builds.(they suck enough)
bards lose all the extra mr they have over ling and elf(no reason to lose agility and strength for 0 extra MR)
rangers(only race that gets a decently high mr on ranger)
clerics guards lose valuable mana pool the only feature that makes a gnome pally distinct
the rest will lose hps or MR based on losing 3 chr/wis in combination.
as for elf, they get outshined because 15% fizzle reduction isnt an adequate boost to warrant using x p p p -1 x. in almost every choice a half elf can cover the stats that an elf does. x 22 19 x x x. ideally leaving the half elf with 4 chr boosting it even further for the penalty of 7.5% fizzles and a choice of -1 agi or int. on the mage/cleric side of it i think elves need +1 int and +2 alloc points so they can sit at xppppx with a +1 and be closer to helf. this definitely would make a gnome need +1 int. and may OP their bards. so it leaves me a tad indecisive.
as a whole i would argue gnome needs more agi, but it may not be 100% needed with agi buff. +1 int for -3 points is outright awful. and elves need something badly. so basically im siding with:
gnome +1 int -1 allocation point (doesnt hit melee builds as drastic, and the mage will lose all chr bonus)
elf +1 int +2 allocation (allows for xppppx caster same as gnome elf keeps its bonus +1 agi/end gnome keeps its bonus +1 wis/int)
this is what i depicted to fix these caster races a bit and detract the least possible from their melee counterparts.