For now, reducing the governance proposal weight to 1 would eliminate the financial incentives to put forth spam proposals (given that the proposal reject cost is also 10 ICP).
In the next couple months we can then have more time to discuss and put forth longer-term fixes for DFINITY to implement that will remove both the financial and visibility (advertisement) incentives for spam.
For example, changes that remove both of these incentives might look something like this:
- Remove the financial incentive by fixing governance rewards on a per week basis - Community Discussion: Revise Governance Voting Rewards to Fix Proposal Spamming Rewards Exploit
- Remove the visibility incentives for spam by introducing an incubation period where voting is completely voluntary (not attached to rewards) and a minimum support threshold - [Proposal] Introduce an incubation period and minimum support threshold for governance proposals