"At the end of each season we have rewards and trophies in place for the top 3. More information on this will come closer to the end of the season!"

So, is it only the top 3 that get rewards and trophies?

or

Top 20, at least top 10 get rewards too, just not trophies?

If only top 3 get rewards, and top 10/20/50 don't get anything, then it's pretty lame.

Hopefully it's the following: (example)

1. Golden trophy + some sort of payout/hat (50k/chooses hat first) + top 50 hat
2. silver 20k, 2nd hat + hat for being in top 50
3. bronze 10k, 3rd hat + top 50 hat

Everyone below gets 5k, and a hat for being top 50 (example)

I strongly recommend it to have prizes for everyone in top 50, then you will see so much more activity in all leaderboards.