Thats great and all, but i personally am very against it if the complete shift would happen.
With that you are basically shifting us from a decentralized society to a completely centralized one.
If this would happen, and the Steem power would be locked inside projects, like the ones you listed, you run a risk, like the case is in the "real world", of corruption, faulty philosophies domination, inefficient distribution, unfair distribution, etc...

This is clearly seen even now with some of the large projects that exist.
How would this be any different then delegating to bots?
You have no control over who is rewarded, or what kind of content is pushed forward.
It is hard work to even pinpoint the exploitation that happens. And rarely do people take the time to do so..

Youre basically giving away all your control, your influence into the hands of a few people.
Supporting a project is one thing. I do that as well with the little SP i have, but completely sending over your wallet value to someone else? I dont think thats a great idea unless they give you a ton of influence on decisions on the platform of your choice. And i hardly think that will happen.

And what if a creator speaks up and criticizes a platform, since in this scenario he is dependent on it, and there is no other way to get rewarded? This leads to complete censorship. I speak up often and at this point it seems i have completely lost a chance to get curated on one platform.
I cant be in support of this. :(