This sounds like the most stupid idea I've ever seen.

How could the PoW and PoS blockchains get united into one big blockchain?Any idea about this,OP?
What's the point of Bitcoin merging with a thousand shitcoins and useless tokens?
What't the point of Bitcoin merging with centralized shitcoins like Ripple or even stablecoins like Tether?
Is this even possible?
The cryptocurrency industry needs competition,not cooperation,event though all the altcoins aren't real competitors to Bitcoin.
Many altcoin/shitcoin developers clearly hate Bitcoin Core.Do you think that they will join forces with the Bitcoin Core developers?I don't think so.