It would make sense to put them there or LGA or BOS, as most of the 190 lines are shuttle work. Lots of trips start as a dead head to BOS or LGA followed by four days of shuttle. I had more landings at LGA than PHL during my first year at the airline. Maybe after the SLI they'll open a 190 base in LGA or BOS.

Lots of LAA commuters use it for their commute. I never had any of them confuse us with a regional for what it's worth.