Strategy Considerations
You only have to bring 3 umas, unlike the 15 in Team Trials PvP, so you have a lot more freedom. In Team Trials, Oguri is almost always used for Mile or Dirt, but in Champions Meeting you can use her freely. There’s also no incentive to keep styles separate, so feel free to duplicate them.
Since you know the exact track details, you can purchase Green skills that you normally wouldn’t. For example, the Left-Handed and Fall green skills each give +40 speed, but tracks that fit those are rare, so you wouldn’t normally take them. However, if the Champions Meeting is on a Left-Handed track in the Fall, then you can take both and be guaranteed the +80 Speed.
Other, less obvious aspects of the track can also have a big impact, such as when the final corner is, where the hills are, and how long the final straight is. The Current Parameters section will call out any exceptionally good umas / skills.
Debuffs are also quite popular during Champions Meetings, so you may wish to have more stamina than usual, or take a few extra recovery skills. A well-built Nice Nature can remove more than a Gold Recovery’s worth of Stamina.
In Team Trials, you aim to get as many points as possible, but in Champions Meeting, winning is all that matters. The best skills change accordingly. Ones that help you accelerate to your top speed quicker are especially desirable.
If you’re in the Open League, typically Stats are more desirable than having a lot of skills. During the Taurus Cup (2400m), many B rank umas only took Swinging Maestro as a skill and the rest of their points were in stats. When raising B rank umas, you should also try to fail the fan checkpoints so you don’t level your unique skill, which adds points. Similarly, leaving your umas at low stars also helps optimize here.
Having an S rank aptitude doesn’t increase the uma’s points, so those are also very desirable.
There’s a rank calculator here that you can use to determine whether your uma will be B rank.