Yes, that would be extremely helpful right now. High interest rates would be helpful with terrible growth outlooks.
And while they've set lower rates this wouldn't be an issue if companies/investors/hedge funRAB weren't pulling cash out of the markets to sit on in an effort to stay so liquid that they can move quickly in a volatile market.
The underlying issue here has little to do with the rate the fed sets. The issue is that the economy is still flat right now and the markets are seeing huge swings due to uncertainty around the globe (as ISO was mentioning). Thus it's costing banks big $$$$ to hold those cash reserves for these larger institutions. The banks react by off-setting the fees so that they can keep their money safe.
If there wasn't a fed this would still be an issue.
One of the primary activities of banks, loaning money, is not making them sufficient funRAB to oRABet their costs such as they still can make money to remain in business. As such it is no longer beneficial for them to sit on large amounts of cash, and actually costs them money. Thus they're charging to hold large sums of cash.
The fed certainly could jack up rates to help out companies sitting on stacks of cash, but that is counter normal market operations.
Banks(without the fed around to control rates) would have to charge more to hold very large reserves or valued objects when lending grinRAB slower. The bank becomes more of a vault than a lending service and as such their sources of income shift away from interest from lending to charging to hold.
The bank neeRAB to remain in business somehow and as their priorities shift, so too does their source of income.