Update FWIW.
1. Engine Cricket
Subaru aware of issue, expects ECU update in a "few months" service manager wouldn't elaborate as I appeared to know more then she did.
2. Loose gas pedal (shimmy's side to side)
"Normal" for this car. Guess having my previous 3 vehicles having floor mounted gas pedals doesn't help.
3. Rattle behind dash/steering wheel upon moderate acceleration
I was told this is a gasket/washer on/in shifter assembly. Only time will confirm if it's the proper fix for what I was hearing.
4. Idle dip - sounds like the car almost stalls
Told this was "normal". 
5. GPS signal loss
Subaru aware of on-going issue. Will be "addressed in the future" by a service bulletin.
6. Rattle in door card
Found and resolved, loose wire or something of this nature.
7. Transmission rattle/chatter in 2nd gear decceleration
Again, told this was normal and in line with "test" BRZ Subaru bought to compare. I feel that my previous car being a bullet proof-rattle free-silent Mercedes again has influenced me to have a keener ear.
8. Passenger window down auto button issue
"I rolled it down and up about 40 times." Couldn't replicate.
I'm just glad to have the car back. One can only make so many lesbian outback jokes in 4 days...