One idea that I've always been partial to is the notion of establishing some type of international reciprocity for drug approvals. The basic idea is that we select a whitelist of other developed, scientifically-advanced nations with FDA-like agencies that we trust. If a particular drug, treatment, or medical device is approved for use in one of those whitelisted countries, it's automatically approved here unless our own FDA specifically acts to block it. (In other words, drugs coming out of whitelisted countries are approved unless the FDA says otherwise instead of being illegal unless the FDA says otherwise).
Obviously the catch here is which countries go on the whitelist. Nobody that I know of is arguing that we should provide blanket approval for drugs that have been approved by, say, Uruguay. But I honestly don't think there's a defensible argument for why Americans should be blocked from voluntarily following treatments that have been approved in the UK, EU, Canada, Japan, and similar nations.