Your idea about voting the current TA down and forming a new committee makes a lot more sense to me than the idea of voting it down and sending the same NC back.
But I don't know the history of why previous TAs at other companies were turned down and what the end result actually was. I'm sure each case is very different with the countless variables involved making it almost impossible to predict an outcome for us based on a previous result at another airline.
As for Delta, who knows how that is going to turn out? Certainly the Delta pilots have no idea at this point. It's fourth and long and they have decided to go instead of punt. No one will know the impact of that decision until they end up with a ratified TA. Right now, I don't believe they even have an NC or a new negotiating timeline. I hope it works out well for them. But their decision has zero impact on mine.