Adapting the unique concept instead of the story itself is always a method on the table, most companies just only adapt to use the IP as marketing to lure fans in and it would preclude that option.
I'd much rather they choose that instead in nearly all cases.
Edge of Tomorrow was rather good if you count light novels, though that one was more of a general adaptation than a direct one.
It was nothing like the original so it cant be a good adaptation
Adapting the unique concept instead of the story itself is always a method on the table, most companies just only adapt to use the IP as marketing to lure fans in and it would preclude that option.
I'd much rather they choose that instead in nearly all cases.