I think no matter what solutions are attempted, it's going to be vexingly hard to fix because most pitchers will continue to throw as hard and with as much break as possible to get more outs. Even if the ball is dead, throwing hard and with max spin will mean your ERA is 2.00 instead of 3.00.
Half joking, but blame all this on the decision in 1884 to legalize overhand pitching. I suppose this is anecdotal, but underhand pitchers don't seem to get hurt at nearly the rate of overhand. Today's women's college softball pitchers' numbers look like Walter Johnson or Kid Nichols.