Do you think POS will weaken decentralization?

Does switching from POW to POS significantly reduce gas costs? And significantly improve TPS?

Why do you think ETHW failed?

If there is a new coin that tries to re-provide POW ETH, will you buy it?

I found several POW-based ETH altcoins released recently, do you think these altcoins have a future?

Bitnet:
https://bitcointalk.org/index.php?topic=5459763

RETH:
https://bitcointalk.org/index.php?topic=5462043