Here are the specific lines in "Fancy" I hope to see Al keep a certain way/anchor jokes on in his parody:
He's gotta keep "First thing's first" at the beginning.
"Hold you down" sounds like "Hoja dannnn" the way Iggy says it. If he can mimic that well, I'll give the song 10/10 based on that alone

Maybe "bringing '88 back" depending on the topic material, like if he were to make it a different year.
For some reason I really think he'll do something with "Can't shop in no department"
Hopefully he spells something where she spells "I-G-G-Y" in Verse 2, the way he did "W-H-I-M" to Lady Gaga's "Capital H-I-M" in "Perform This Way."