Turning off fusion suddenly with hundreds of utxo, then coming back months later and fusing them all, is a pretty big privacy giveaway.
Ideas:
- Write guides to encourage users to consolidate before closing wallet for extended time.
- Add detection in fusion plugin on startup, to check whether coins have a common age and to warn the user.
- Add nag warning when wallet is closed / autofusions are stopped, and wallet has many coins.
- Develop 'slow mode' where new coins have a random delay before they are allowed to be fused.
- This works two ways: the wallet will end up with a larger spread of fusion coin creation times, and it will have a larger spread in coin spend times.
- In order that slow mode users don't stand out, it is helpful if regular fusion will occasionally slow some coins. This can be difficult.
Turning off fusion suddenly with hundreds of utxo, then coming back months later and fusing them all, is a pretty big privacy giveaway.
Ideas: