While this makes sense for Steemit or social blogging frontends, maybe Steemit Inc is looking at an opportunity for a Disqus-type competitor where the Steem blockchain would host comments on websites of various kinds. Splitting the comment and blog pools would be a necessary pre-requisite for such a solution
Splitting comments and blog pool is not necessary. When creating a comment pool you achieve nothing, influence disparity will still be huge and you won't solve scalability either as you would need a whale on every single site using disqus ( steem version).
A website owner wanting to integrate steem version of disqus will look first how it is going to benefit his existing userbase. If everyone of its users need to buy $10 000 to be able to send a few cents to each other he is not going to bother implementing it.
Steem will have many different use cases, you can't just create features to accomodate each of them, what we need is a solid base where everyone can implement steem regardless of what product they want to build. In its current form steem doesn't make sense for websites to integrate as it won't benefits their user base.
Thanks, good points.