(I'm not sure this belongs in the puzzles, but I'm not responding to something in the main discussion thread so... sorry for perpetuating off topic-ness.)
I think that the ruling that appears to have been settled on by Donald is perfectly logical. There are potentially other reasonable interpretations, but I like the new official ruling the best.
When considering the Throne Room case, you have to very carefully define what "it" is. If you define "it" as the rules of the card in your hand that you chose, then you can go two different ways. If BoM transforms before anything can ever see it as BoM, then you say "this card is Feast, and TR says to play Feast twice". If it does not, then you say "this card is BoM, and TR says to play BoM twice"
Those are both reasonable interpretations, but the other option is to define "it" as the actual single physical instance of the card you chose. You chose an Action card from your hand and Throne Room tells you to play that card twice. That card is BoM. You play it, and BoM says "now I am Village until I leave play" when you play that card again, it is sitting in play and it is Village, so Village gets played. If you choose Feast, the card you chose is in the trash after it is played the first time. The card has changed back into BoM before it gets played the second time, so it gets played as BoM again.