My point is that you can't change the POW in Bitcoin. You can make a new coin with a different POW, and you can even carry over all the coins fro Bitcoin in a genesis block or whatever, and fix everything else which is wrong in Bitcoin in the same go, but you can't change the POW agorithm. It is impossible. It will become a new coin either you want to or not, It is just as stupid as those scammers who pretend it is possible to increase the blocksize in Bitcoin. It will become a new coin either you want to or not.
The only way to upgrade the POW while keeping Bitcoin Bitcoin, is to add an extra POW as a soft fork.
I see there are mostly newbies posting in this thread. Perhaps you should take some time to educate yourself about how bitocoin and blockchains work.
The number of mind numbingly unaware posts here and on reddit has become ridiculous over the last week. I mean there are people literally suggesting forking to a different PoW algorithm while calling Bitcoin Unlimited the altcoin if it hard forks, etc. If you're the coin that's forking to a different algorithm entirely and also changing the way transactions are sent then how can you argue that the other coin is the altcoin?
Adding an extra PoW might genuinely help to regain some of the distributed nature of early Bitcoin, but I think that long term this will be just a bandaid again. Someone somewhere will likely work on an ASIC that's better for any new algorithm and then in a few years we'll again be very centralized.