This is a funky, fresh design that likely would have attracted at least a few buyers and stolen sales away from the Ford Pinto wagons. Not really a "van" without a sliding door on the side - if they had included one they might have trumped Iacocca and kicked off the mini-van craze a couple of years earlier.
But sadly, and I say this as an AMC fan, they just never had enough money to do things "right." Their cars were usually underwhelmingly executed and, had these gone into production, they'd be probably be as rare at local car shows as Concordes and an Eagles are today,
The question "Could it have saved AMC" is a resounding no. AMC did not have product failures, AMC had corporate culture failure. Public corporations are not about the products, they are about share value and generating churn and profits in the stock markets. The products and their profitability are largely irrelevant. AMC always had good cars that sold well. They just had crap management in the corporate offices and board room.
As the 50s wound down all the independents had supply chain issues of scale. Hard to compete in mass market sales when the big 3 competition is buying everything in 10 or 100X bulk prices versus your costs.
Look at the various ways they (Studebaker, Packard, Nash, Kaiser, etc.) tried to save tooling costs. Annual model changes killed the independents, something the big 3 got rid of pretty quickly too (in hindsight) but not till it worked at thinning the field.
Maybe the failed attempt to make "the big 4" could have kept those brands around as a true player.
Maybe some of them letting go of mass market sooner and being narrow focus could have let them go a few more decades until they got absorbed in the 90s like all the Euro and such brands. Jeep for one could have stood alone. Multiple successful companies were spun out of some of the other orphan brands.
Yes AMC history is worth saving.
Studebaker should be remembered.
We are all diminished when Locomobile is spoken for the last time.*
*replace AMC, Studebaker & Locomobile with ancestral contributors to any area you care about.