Agreed, a lot falls on Trubisky at this point. But don't forget, there's not much money or 1st round draft picks that they will be able to add who can help him out anymore. They basically set out to sail, and won't be able to course correct for years. Risky move to make without an established quarterback IMO.
To your original point, you're right that we need to know what actual cost to get Clowny would be to make it worth it obviously. I'm assuming he would be coming in at an inflated premium.
....Good thing we traded up for Sammy Watkins and when we could have taken Mack ☹️