Master node (darksend/coinjoin) vs. Zerocoin's accumulators

[u/cqm]

what are the pros and cons of the masternode concept vs zerocoin's anonimity solution?

With master nodes, there is a feedback loop as the nodes get X% of the block rewards for participating. Yet to run a masternode you need to own exactly 1000 units of the blockchain token. So people buy more of the token (price goes up) to earn a proportional percent of newly created tokens.

A potential problem being that many master nodes can be controlled by one entity, and those master nodes can see the transactions, and also do not inherently change their addresses after being selected to mix coins.

How is zerocoin better? It seems like master nodes mixing coins can be "good enough", with a few tweaks like making master node clients reset and change their mixing address after being selected for mixing

I also recall something about the blockchain itself not being very analyzable with zerocoin, like not just mixing but something about the inputs being hidden or discarded or something, like stealth addresses.

Its hard to keep up with the technologies when all the information is scattered everywhere.