Voting in the main server offers Nether Stars that can be sold for $350-$500 ECD. In some cases depending on the number of stars I receive I can get $1500-1800 ECD and convert that to $500-$600 in Skyblock currency, which then allows me to purchase the same basic blocks at market value at a much greater quantity.

Example:
Vote on main... receive 5 Nether Stars. Sell them for $1500. Convert to Skyblock for $100..In most cases I can buy multiple stacks of cobble and much higher amounts of grass, dirt, etc.

Vote on Skyblock... receive 5 Cote Crate keys and receive only a small amount of the same basic blocks.

The incentive to vote on Skyblock is much less then voting on main server with little effort to convert ECD.

Voting incentives should be aligned so that the benefits and rewards appear to be the same regardless of where you vote.

Something to consider now that many players are playing Skyblock.