I hated working at a level one trauma center. When the surgical team showed up, they would bring around 7 people during the day, and 2-3 at night. Combine that with the 3 ER residents, 2 med students rotating throught the ER, lab tech, 2 ER techs, 2 ER nurses, pharmicist, and 4-5 random gawkers, the trauma bay became jam-packed inefficiency personified.
It was WONDERFUL to run traumas in a small place and have the bare essentials as far as staff to actually be able to do the assessment yourself.
I think you would potentially learn trauma BETTER at a small place.