Oh no. We just gonna have 5k and marathon? No way. I like the road 10k suggestion. Not sure why that would take away from marathon. People have to choose between 1500 and 5k all the time.
OP, I like where your head is, but alas maybe these contrived XC courses are not ideal for selecting road or track 10k? Win win, have a XC 10k in olympics and use worlds to qualify. More running events is gooder than flag football. XC is a huge sport compared to many other olympic sports. Many, many times more kids run X than figure skating, xc skiing, gymnastics, archery, dressage, wrestling, trampolining, h2o polo, skeet, cycling and MTB by a long shot, prob even swimming...
name any HS sport with as many participants that isnt an olympic sport.
If this means our less than most elite end up doing XC as opposed to track...who cares...all the better. 2nd tier runners duking it out would be dramatic.