Maxperson
Morkus from Orkus
You're right. Glorified is probably the wrong word, but divine intervention is likewise the wrong term. It's an improved/amplified/boosted spell slot.Glorified sounds like it is just better in name.
Maybe I interpreted it wrong.
I think it is yes a very powerful ability to invoke the power of your god (a. k. a. cast a spell) when you need it.
Did you have that spell prepared or enough diamond dust? Nope. Your god does not say: "bad luck". They say: "ok. This one time (today) I can help you."
And later, the god grants a wish. That seems like what a good does when they intervene.
Maybe a little annotation for the low level divine intervention could read: at your DM's discretion, you can ask for a different effect than chosing a spell.
That's semantics, though. You know what we were saying when we used "glorified." The ability(good as it is) as it stands is not worthy of being called divine intervention.