What if we did the NCAA indoor route for the world championships (not the Olympics as I think there should be exceptions made). Top 48 athletes in every event make it to World outdoors and top 24 for world indoors regardless of nationally. Deadline is 10 days out from the championships. That way the outdoor trials aren't 5-6 weeks out from the trials like a lot of countries have them and athletes don't peak too early.
1) This would be huge for the diamond league (which would be better for the sport) as a lot of people would be chasing fast times instead of guys just simply trying to dip under an IAAF standard. Meets like Payton Jordan, USATF Distance Classic, and Portland Track Festival, NCAA Grand Prix, and Millrose would be so much faster. No politics, just fast times.
2) This would promote a lot more national records as well and people wouldn't be jumping nationalities, but rather just trying to be fast. Why switch nationalities to America if you don't want to? You're competing against everyone in the world on time instead of an individual country.
3) Now yes, you would have half of the field in the steeple/5k/10k be Kenyan/Ethiopian, but that still leaves another 24 or 12 spots for really good athletes from other countries. Who knows, we could have 5-6 Americans for some distance events.
4) Honestly, if you're not top 48/24 in your event in the first place, you probably wouldn't have been good enough to be competitive and make it out of the first round.
5) A lot of reasons why Kenyans/Ethiopians are currently so high up on the time descending list for distance events is because they to have a fast time to impress selectors. So you can't just look at previous IAAF season rankings and think that would be accurate if this new system worked. American's in distance just don't focus on fast times as much. It's a lot about getting the standard (13:23, 27:45, 15:23, 32:15) and then just working on your kick and peaking for a race that's a whole 6 weeks out from World's. This would actually suit American's (and everyone) better for peaking at World's than in the past. Even if you barely made the top 48/24 2 weeks out from World's at least you only have to carry a peak 2 weeks longer, not 6.
6) Have IAAF make it to where your country cannot deny you a trip to World's if you're top 48/24 in the world (which is kinda of a separate problem). Countries are not allowed to have stricter standards than just simply being the top 48/24 based on time.
Now, there are a lot of reasons this system would be bad, but I would be open to hearing them.