I consciously avoid making up my mind after the first seconds or minutes (which is an atavistic reaction) but after an hour or so I usually have an idea of "no", "yes", "not sure" (for the "will fit in" perspective).
Since the teams are already quite diverse, there are no obvious bias that would pop up. I want to have people of all kinds (everyone can provide something different) so i am very open by definition. But I need to feel that they will be a good fit.
This is of course completely arbitrary and based on gut feelings.
I am not sure about which blindspots you have in mind, though?