I guess the issue is how much you hope to save. To me, a lot of shows already offer 40% off through discount sites like BroadwayBox, Theatermania, and Playbill. And if they are on TKTS, they could be 50% (or less) off. I rather book my own tickets, pick my own seats, and free up my time in NYC (if I were being a tourist, I typically just drive in, see a show, and turn back around) to enjoying everything else the city has to offer, with the theater tickets locked in.
The problem with your selections (and I'll only speak from a discount perspective, see what you want, heh) is you are knowingly seeing the shows that every tourist sees, which means they rarely offer discounts. Discounts are for the shows having a hard time getting word of mouth and building an audience, which is... none of the shows you're seeing.
Of course, if you don't follow all of the new shows and such, you'll need to sort out the ones not building an audience deservedly, and the hidden gems. But if you start a thread asking for advice there, beyond the people complaining about people asking, and half of the people saying you must see (and the other half saying must avoid) The Great Comet (I'm in the must-see camp), you'll figure things out.