Still high, but not society killing.
But I also make a jillion assumptions, including that everyone who needs ICU care gets it.
Right. We have a great test of the hospital and ICU cohort rates coming up: the West. Anyone found with coronavirus in the west is guaranteed to get top notch care in the west. They will all, 100%, go to the hospital, or get completely monitored in some other quarantine if they are not sick. It's also guaranteed for now that any of the sickest who need ICU will get in to an ICU. Would not surprise me that the ICU cohort will have 50% mortality here in the west.
And the rest will be less than 2%, probably much less. Then the only remaining question will be how many of the total will end up in ICU. If that ratio is high, then we have your worst case scenario. I don't think it will be, but it is unknown for now.