A new question about SLA

[partyrico]

So now that SLAs qualify as casting the spell for prestige classes and feats, do they qualify for the feat preferred spell?
Regardless of the above answer, do you think this is too powerful?

[Xaratherus]

While SLAs will fulfill prerequisites as a spell, they've previously FAQed that things that modify spells, like metamagic feats, can't be used on SLAs. So I would say no, you couldn't use Preferred Spell on an SLA.

[partyrico]

I was thinking about it, and I think it would be too powerful for allowing extra spells onto classes (like alter self or glitterdust through aasimar) but I think it would work. Unlike metamagic feats, preferred spell doesn't alter the spell in any way; it's more a prequesite and grants an ability to cast that spell (not the SLA) spontaneously.