as long as counterparty does not bloat the uno chain i have nothing against them. It could indeed be a good idea for them to take over or launch their own coin and merge mine that one with Uno. Why not? But that's up to them. The general idea is a good one, BN. But don't let them bloat the chain of uno!  

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right now i think merge mine as many coins as possible with uno is likely a good approach. Especially the good ones. Miners like it, uno doesn't need a change, get more hash and it doesn't bloat the uno chain.
Are there any downsides to that?