Re: the filtering. I did hear mention of this on one of the Developer Q&A Live Streams but can’t remember the details nor which episode it was in. Thanks a lot memory 
I’m wondering if live traffic is suppressed/greatly reduced going in to Baltimore Washington International (KBWI) as the main runway is missing, 33L. Not shown on the “World Map” at all. We get a lot of real world traffic on this runway in part due to Southwest having a hub here.
I reported it via Zendesk right after launch (as did others) but there hasn’t been a fix yet. Really curious how the missing runway would effect the display of Live Traffic. Any info will be appreciated.