I'd actually be more interested to see it on a legit course, but where PEDs were allowed. That would finally settle the debate about how much they actually help elite athletes.
No. This would only settle that debate if we all believed that the current world record was achieved without doping.
But, why do most letsrunners think that nobody can improve the world record from 2:02 to 1:59 without doping on a legitimate course? After all, PR improved the world record from 2:18 to 2:15.