Merge Mining Problems

[zawy12]

MM problems:

1. Big miners selling coin. But what good is a coin if only your small miners want it?
2. Not preventing 51% due to the large majority of parent coin miners not willing or able to MM.
3. If the pool's code is lazy, the new template when a child-only block is found may keep the current parent timestamp resulting in same or out-of-sequence stamps, which is a bother.
4. Makes blocks very slightly bigger.
5. Removing it requires reading our old chats to figure it out. (return to v1 blocks like Karbo did)

In general it just seems to cause problems by having dis-interested miners mining the coin. But it keeps coming up as a potential important way to prevent 51% attacks that result in double spends on exchanges..

See also this.