The last new long gun designed to use an exposed hammer came out it 19th century.
The Browning BLR comes to mind, it didn't come out until the latter 20th century. So that statement is busted.
I won't argue that we need more striker fired pistols, we need more of every kind of pistol. But I don't think we need more copies /clones of Glocks, or similar designs.
If you want to talk striker fired, lets do so, but don't think striker fired means just polymer framed service pistols.
I've got a striker fired pistol with a polymer grip frame. Will shoot a gnat off a flea's back at 150 yards if you do your part. The trigger pull is exceptionally good, short, light, and crisp. Might even be a couple of pounds pull, but feels like less. Pretty flat shooting, too, with a muzzle velocity in the 2500fps range.
Another of my striker fired pistols is all steel, (other than the grips), its a 9mm Luger.
Another of my striker fired pistols has a 100 round magazine.
I'm fine with the idea of more striker fired pistols. Don't give a rip about more copies of Glocks though.