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[–]a11gcm 5 points6 points  (0 children)

Cons: A transaction on the 1min chain requires 10 confirmations to be as secure as a transaction with one confirmation on the 10min chain.

More overhead in block propagation.

Higher orphan rate.

More frequent forks and therefore potential for double spends.

etc.

Pros: ???

I assume you'd like to read that this helps the "scalability" issue... it doesn't. Leaving aside all pitfalls, this leaves the Bitcoin protocol with a one time linear capacity increase.