While I'm very well aware it's not quite the same as the guitar being a hardtail, I did try brass, steel, and zamak blocks, as well as brass, block steel, and bent steel saddles. I also had the trem decked against the body and 5 springs. None of those fixed the "issue". I liked the steel block with the bent steel saddles, which is the most traditional "Strat-y", so I have a feeling a hardtail would just be another flavor of "not right for me". I mean, after all, the bridge pickup would remain in the same spot.
But who knows. Maybe you're right. But I spent so much time and effort into getting that Strat "right" for me and failing, that I don't really feel like giving them another chance... for now.