A126
That's up to your DM. The well-defined categories (prevalent, anointed and vanguard spells) definitely do not include this.
Prevalent Powers, however, might:
Feats=> You might argue that bestowing feats can be done via Dark Chaos Feat Shuffle, i.e. an 8th level spell, and is thus equivalent to a major power.
Increase Caster Level => The 4th level spell Consumptive field increases caster level, so it could be considered equivalent to a medium power.
Bestow Extraordinary Abilities => Polymorph => medium power.
Bestow Supernatural Abilities => Shapechange => major power.
This, however, is, as all things related to epic spells, completely subject to DM approval.
A135
I think it would work on a village of 1st level commoners. It has the same name and descriptor (Feed (Su)) as the ability of the Barghest (MMI), with the difference that the Barghest has to feed on a specific number of corpses instead of a specific number of HD.
Q137
There was a Dragon Magazine with a table that listed LAs for normally LA - monsters like beholder. Does anybody remember which Dragon that was in?