To be honest , any coin run by ASICS will be centralized due to economic's forces.
(Only the Rich can afford the costs of maintaining ASICS.)
All PoW coins will eventually uses ASICS or be centralized to mining farms, it is a design flaw in PoW that can not be fixed.
You have to move to a new algo to stop centralization, if that is your main concern.
True. That's why there should be a POS Bitcoin. That one will be the winner. Moreover, it will not use as much energy as the POW Bitcoin which is better for the environment. If I would be working on Blockchains than I would have made a Bitcoin POS split.
That would be a good idea, but here are the things stopping it.
1. PoW Miners refuse to give up the control
2. PoS requires at least 1 billion coins to be secure, anything lower and 51% attacks become a greater concern.
3. Many PoS implementations has excessive inflation rates that cause a downward price pressure that never relents for long.
Those are the main obstacles. When Eth does convert to PoS, watch and see where if the money stay with ETH or switches to ETC ,
Miners still dominate the majority of trading, and their interests are still PoW.
Naaah. The obstacle facing a potential PoS version of Bitcoin is for somebody to expend the effort to code it up and fork it off. Other than this, there are exactly zero barriers to accomplishing such a thing.
What are ya waiting for? Hop to it!