Just skimming through Aguilar's available YouTube stuff, my gut tells me we're running with Merk in game 1.
Unless Aguilar just "clicks" with Heupel's system and our receiving crew, I think he'll take a bit (not a knock on him, he's coming in late) to get into the offense.
What some have mentioned as "quick decision making" looks a bit like "I'm throwing to the primary read no matter what" to me, but that may be not trusting his line to hold. Heupel has seen a lot more film, I'm sure, than me and can understand what's happening a lot better.
Forced..... is the word that comes to mind.