Earlier quoted context omitted.
Then you run into the problem of innocent, or at least justified, people having their financial lives destroyed defending against murder charges. I don't think it's as simple as "if someone dies there needs to be a trial".
Only something like 11 cases out of 160,000 the accused has not been indicted. The prosecutors can already "automatically" put everyone through trial. Not to mention plenty already "have their financial lives destroyed" through the Civil Forfeiture law.
At the state level it's much higher 3-4%. You can say it's a rubber stamp, but in practice the average is raised by the fact that most criminal cases are slam dunk (that kilo of cocaine found in the accused's car is almost certainly his). And the bar for an indictment is relatively low, just probable cause. It'd be pretty uncomfortable if prosecuto so we're bringing lots of cases where they don't even have enough evidence to convince 3/4 of a grand jury there is probable cause.
[1] The distinction is relevant because federal and state prosecutors handle totally different sorts of crimes.