To prevent dump the coin maybe it should be better to accept masternodes? People who have 1000s of IRD will cooperate to get masternodes and wont dump their coins.
Or are there any other options to prevent people from dump?
Cryptonote doesn't need masternodes.
And besides that plenty of MN coins get dump as well.
The whole market is down. The only thing to prevent dump imho is a good exchange with little to no bots.