This line "Because these abilities are not balanced for PC use, these level adjustments are quite liberal" literally means that the LA is too high. One might argue RAI, that what this is retrying to say is that the change to ECL is ... well opposite. Now that I look at it both ways of looking at the quote support the literal meaning.
This is supported by the LA+12 for single dominated monster at a time. Warlock 6 / Mindbender 7 does this for large or smaller 6 more times a weak at the same ECL and is a viable character all the while. Compare to LA12 / x 1 which has no saves or hp...
So we know the LA is inflated, but by how much? We need a litmus with a listed ability that compares to an existing LA. Vestigal Twin seems comparable to LA+2 for the far superior muliheaded template after level drains. This is what makes me think the table's PC LA should be atleast halved and rounded down. The Superior Multiweapon Fighting feat/ability is swapped for the multivoice feat, but we are still out Nat+1, Con+2, Darkvision 90', vorpal semi-immunity, +2Listen,Spot&Search, and the Improved Initiative and Combat Reflexes feats.
What we should do with the part we are out? I'm not sure its worth a full LA+1 but it feels close. The template is only LA+2 and we've supposedly found 1 LA of it, maybe a bit more considering the ability is just slightly better than the feat. This makes me think we should make the LA divided by three and round. It seems a shame to be be able to combine fractional LA for LA1.
Maybe both fractions should stay. Thoughts?
Note: I'm not interested in the fail of a litmus test in SS11. -1 LA for small size? Ni infinite SR for LA1? Whatever.
Reference Chart:
Name CR LA The greater of CR and LA/3, rounded if over 1
Aberrant Limbs +1 +2 1
Abysmally Wretched +2 +5 2
Arcane Adept +2 +4 2
Divinity +1 +2 1
Doomwatcher +2 +4 2
Dragon Touched +1 +2 1
Fey Spirit +1 +3 1
Graced from Outside +0 +1 1/3
Gravetouched +2 +5 2
Gaurdian Spirit +0 +1 1/3
Lifemate +0 +1 1/3
Naturebond +2 +5 2
Past Life +2 +5 1/3 + ({0/3} Su Poison Immunity, {1/3} Bardic Knowledge, {2/3} +6Str&Con,+3moral will saves, -2AC Rage, {1} Smite Evil, {4/3} Fighter feat, {5/3} Metamagic or Item Creation feat, {2} +6 Favored Enemy, {7/3} +6d6SA, {8/3} +11ECL rebuke, {10/3} +11EDL WS, {4} 5th level SLA)
Poisonlaced +0 +1 1/3
Prodigy +0 +2 2/3 (2 for int based factotums)
Prophet +1 +5 2
Spore Carrier +2 +4 2 (1 if not in an ooze-heavy campaign)
Stormtouched +3 +7 +2 (+3 for a Druid 1 making his own little wight apocalypse)
Unearthly Beauty +4 +12 +4
Vestigal Twin +2 +5 +2