1.) No more than 3 athletes with the same jersey in any Diamond League meeting.
2.) Divorce the IAAF from CAS. That way you can have:
3.) Chromosomal testing, sex-organ testing, & hormonal testing for everyone. If you have a Y, you're competing with the guys, deal with it. If you have testes, no matter where, you're competing with the guys. If your testosterone levels are too high, you're competing with the guys.
4.) To deal with these win-out-of-nowhere runners: You have to do more than just win the race at Worlds in order to get the world title. You also have to have raced 5+ times that year (before Worlds, after Worlds or a combination) for 5000m on down, 3 for 10,000m, and 1 for walking events and marathon, AND either gotten the A standard twice outside of Worlds, or twice beaten runner(s) with the A standard. If by the end of Dec. 31st you haven't fulfilled the requirements, you forfeit your medal.
5.) In order to be in the IAAF, a federation must let WADA, not its domestic federation, do the testing, and pay for these tests. This decreases cover-ups by taking testing out of the domestic scene.
6.) Fine a federation for every doped athlete (athlete who fails both A and B sample). It will become so untenable to have dopers that a federation will do whatever it needs to do domestically to kill doping.
7.) Introduce a WWE-style title match structure in the non-Olympic even year with no Worlds (like 2014 was). I'm not sure yet how to accomplish this, and would love suggestions, but I'm basically envisioning a year where the world title is up for grabs multiple times, where athletes can challenge each other for it, and where the meets where it's up for grabs could change, and could be anywhere (from a tiny meet to a Diamond League meet). To clarify, the winner of the World title the year before is not being challenged; rather, everyone walks into 2014 / 2018 / 2022, etc. with NO ONE having it, and the IAAF chooses a meeting to be the first "title match" (e.g. Doha), and the title may change hands from there in subsequent meets. Everyone says track & field is in trouble, and I think this might be a way to breathe some life and fun into it.