This question already has an answer here:
Take this chef proposal, and note the description:
Proposed Q&A site for professional and expert amateur chefs interested in the more subjective aspects of cooking; this would be to Cooking SE as Programmers SE is to Stack Overflow
Should we allow this trend to continue, possible resulting in things like a subjective web applications proposal? It seems like almost ANY proposal's users could benefit from having a place to ask subjective questions, seeing how much the subjective programmers proposal took off, how many good questions are asked and closed as subjective, and how many successful blogs and discussion sites there are.
But it seems like having totally different sites for this is wrong, as they would share no more official connection between them than with a gaming and skateboarding proposal. If they could be linked somehow, at the least like Stack Overflow and Server Fault are linked as part of a trilogy, they could both be more prosperous.
Another idea would be having a subjective version of every site (subjective.blah.com, like every site has a meta.blah.com). This would be a great way to link the two, and the separation would still be there as it. Heck we could even do it with the existing trilogy sites, with a 'belongs on subjective' auto-move feature like 'belongs on meta'. It's obvious that people want to ask subjective questions. The issue at hand is how (or if) we choose to enable them to do that with the Stack Exchange model. This is a much more long term issue that will need heavy discussion before any consensus can be reached.
EDIT: I see this question proposed something like this for polls. What I am proposing is a separate dominion for all questions that are valid except for being subjective. Hence every site could have a normal section, a subjective section, and a chat section. This may seem complicated, but IMHO it's a great way to divide up a topic. There would be a place to answer questions, discuss topics, and just talk. As far as I can see this covers every area users would be concerned with, leading to a one-stop site that would provide good organization for all areas of a topic.
Thoughts? (sorry for the big wall of text ;)