Frankly, I think the US might be better off allowing the US Army to set up its own units for close air support. I suspect if they were allowed free choice of equipment they would operate some type of rugged STOL fixed-wing airplanes for that purpose.
I'm assuming you're talking about this? https://en.wikipedia.org/wiki/Unification_of_the_Canadian_Ar...
http://www.afhso.af.mil/shared/media/document/AFD-100927-061...
Brrrrrt.
It's a great plane for the "war on terror". It would be completely useless in any other war.
Back to the article: if the military were as agile as it was in World War Two, it would have built something better than an A10 within a few years of entering the war in the Middle East. In the search for that better product, it also would have designed, built, and deployed quite a few strong candidates for this 'worst air force' article, killing quite a few of its own pilots in 'field testing' the various designs.
I'm not sure the F35, with its "we can design a plane that will work great in any war, if you give us a few decades" is an improvement over that. If it ever has to go to war against something "even vaguely resembling a military", and it turns out to come up slightly short in the first few encounters, what would the next step be? If it would take another decade to fix that, chances are the war would be lost before a fix was deployed.
When that day comes, hopefully our military tech is up to the challenge. The A-10 most certainly isn't, and I'm not convinced we have a real replacement coming any time soon.