Would you omit radiation to the R0 tonsil tumor bed after TORS for p16+ tonsillar SCC when delivering adjuvant radiation to the neck due to + lymph nodes found intraoperatively?  

No This is a strategy being advocated particularly from centers that are strongly surgery driven.  There has been at least one publication, but the data so far is with small retrospective sample sizes. There is a certain historic irony, as when postoperative radiation was initially advocated ...