I want to read it a couple more times to be sure that I have not missed anything. On a quick scan through I see that the task force offered no solutions or guidelines but rather outlined what topics need to be addressed.
To begin: The cause of death is clear: It was too damn hot, both the air and water.
So far USA Swimming is the only governing body to suggest clear rule changes such as specific water temps, GPS, and such but USA Swimming isn't the rule maker for FINA. These are just demands.
Now, here is where FINA, USA Swimming, and even event promoters are not getting the information they need most; (Warning here comes a technical sentence) - What is the coefficient of heat transfer between skin and salt water? Or, what air-to-water temp ratio is absolutely in the safe range to swim in. Engineers please?
That sentence is a mouthful but here is what it means: Mechanical engineers have lots of charts and books with exact formulas and answers in them. These formulas can tell engineers all sorts or mechanical details such as how long it takes for a ceramic cup to cool down after it has been in a pottery kiln? How long it takes for salt water to evaporate at specific air temps, even how long and how hot it has to be to make bread rise.
Now, somewhere in one of those arcane references is a water-to-air ratio that can simply state when a body overheats or goes hypothermic in either fresh water or saltwater. If none exist, which I sincerely doubt is the case, then one has to be researched.
Till then, I say pick a number that is so safe in regards to both hyperthermia and hypothermia standards that races can be conducted quite safely till a coefficient is produced.