Aaaand my theory fails. Apologies for the assumptions I made, it's something I've observed with previous competition lineups but clearly isn't true for this one.
I do think it's a little extreme for competitions like Boston to automatically accept all teams that placed the year before, especially the way the bhangra scene changes so drastically each year. But I actually think collegiate teams are the least "risky" in that sense because they have a strong foundation and consistent pool of dancers, while independent teams generally die out after a year or two. Not seeing teams like UVA or GMU in the lineup this year makes me think this is an attempt to mix the lineup up a bit. FCB is an all guys team, Columbia is a modern team, PDAP isn't from the Northeast, etc. All things that were missing from the Burgh lineup in the past.