While I understand the need to get rid of farming accounts I don't agree with this strategy. I don't think that those farming accounts are operated by humans. I am quite new in the game, created account about a month ago. Not having luck with the chests and not sure I want to throw my money into this my collection power is very limited so I am spending my time in bronze league. On Bronze 3 almost all battles have standard rules making bots hard to spot but sometimes ruleset doesn't allowed magic monsters and you fight against turtle only xD.
Bots are the real problem as one individual can easily setup huge farm of accounts and since it is browser based game botting is simple. Moving rewards to Bronze 2 won't solve the problem. Bronze 2 is hard to get for new player since they don't know the game, renting is there somewhere but tutorial is not focused on renting. Bronze 2 is 10 dec/day so it will only make botters earning a bit lower and it will take longer for bots to reach earnings.
My ideas:

• Novice League should take longer and non standard rulesets should appear right from the start (Splinterlands is actually fun to play only thanks to ever changing ruleset so if you want to hook someone into the game give them all you have!)
• Winnings in Novice should give you cards to play with in Novice League matches. This way there will be rewards. New players will have a chance to play with more interesting and powerfull cards. Botting will be hard since higher rated players in Novice League will have better cards and won't be crushed every time by one simple strategy. Cards that you "won" in Novice League will not transition with you to bronze league.
• Introduce CAPTCHA. I don't like it myself but it works.