Tannins and a "medicinal" flavor are pretty different. The tannins are going to taste a little sharp, and the tea experiment hits the nail right on the head. Also, the wine example was good. Largely, the differences between white wines and red wines come from the fact that red wines have lots of tannins from the grape skins.
And about the scorched wort - scorched sugars are, pretty much, caramel. So I doubt that you'll have any regrets with this one. And it sounds like your so-called mistakes might turn out to be interesting.
Now, I'm sure you've read about decoction. This is where brewers boil the grains. So just think of your boiled grains as a loosely interpreted thin decoction!
