Heard from my favorite Youtuber of Splinterlands that the airdrop of vouchers will increase but still depending on the amount of SPS staked. What I did today is to sell 1 Voucher and convert my Hive profit to SPS. I hope this will increase my Vouchers next month. For the first month of Voucher airdrop, I got 9, I used the 3 to buy Chaos Legion packs and I will sell the rest if the price is right.