In principle I agree but the project of converting the witness to a "fabric" is going to be expensive and slow. Also as you may agree, prior to that resteucture, adding smart contracts will tend to be deprecated for refining existing ones. Which is why I am building a fabric type chain up from scratch. Steem's blockchain is gonna grow bigger rally fast. If it was broken into subchains this load would be dispersed more allowing more witnesses to handle a bigger, parallelised block schedule.

But nothing on the internet fills the gap that Steem does, so it will be a couple of years before anything better appears.