Well I guess I spoke too soon. It was actually SUPER easy to backward engineer this.
So here is the XML you need:
Code:
<thing id="uXXX" name="+1 XXXX" compset="LevelBonus">
<tag group="explicit" tag="35"/>
<eval phase="PreAttr" priority="1000"><![CDATA[
hero.childfound[aSTR].field[aStartMod].value += 1
]]></eval>
</thing>
This adds a new option that increases strength. You need to change the aSTR to the ID of your attribute score. In addition change the XXX stuff I used to make this to something that matches your attribute score.
The Explicit.35 tag controls where this is displayed in the list. For now I have it set to 35 which is 5 higher than Cha which is set to 30 and Str is set to 5.
Hope that helps...