Anyway, I'm not sure whether the policy of SE allows suggesting redirections to non-affiliated sites.

Indeed it does, particularly if those questions are egregiously off-topic for this site as you note.

could we not show a note in bold, every time the "ask question" page is hit, that tells users to that if they have discussion-oriented or otherwise subjective questions, they should take them to gamedev.net

We do have some specific help on the sidebar of the ask page:

How to Ask

 

• Is your question about game development?

 
• We prefer questions that can be answered, not just discussed.

 
• Provide details. Share your research.

 

If your question is about this website, ask it on meta instead.

That also links to the FAQ and asking help page too: https://gamedev.stackexchange.com/questions/how-to-ask

I don't know if it'd be appropriate to speculatively link to a specific discussion site, but certainly we do try to make it clear that subjective questions aren't what we do here.

Anyway, I'm not sure whether the policy of SE allows suggesting redirections to non-affiliated sites.

Indeed it does, particularly if those questions are egregiously off-topic for this site as you note.

could we not show a note in bold, every time the "ask question" page is hit, that tells users to that if they have discussion-oriented or otherwise subjective questions, they should take them to gamedev.net

We do have some specific help on the sidebar of the ask page:

How to Ask

• Is your question about game development?

• We prefer questions that can be answered, not just discussed.

• Provide details. Share your research.

If your question is about this website, ask it on meta instead.

That also links to the FAQ and asking help page too: https://gamedev.stackexchange.com/questions/how-to-ask

I don't know if it'd be appropriate to speculatively link to a specific discussion site, but certainly we do try to make it clear that subjective questions aren't what we do here.

Anyway, I'm not sure whether the policy of SE allows suggesting redirections to non-affiliated sites.

Indeed it does, particularly if those questions are egregiously off-topic for this site as you note.

could we not show a note in bold, every time the "ask question" page is hit, that tells users to that if they have discussion-oriented or otherwise subjective questions, they should take them to gamedev.net

We do have some specific help on the sidebar of the ask page:

How to Ask

• Is your question about game development?

• We prefer questions that can be answered, not just discussed.

• Provide details. Share your research.

If your question is about this website, ask it on meta instead.

That also links to the FAQ and asking help page too: http://gamedev.stackexchange.com/questions/how-to-ask

I don't know if it'd be appropriate to speculatively link to a specific discussion site, but certainly we do try to make it clear that subjective questions aren't what we do here.

Anyway, I'm not sure whether the policy of SE allows suggesting redirections to non-affiliated sites.

Indeed it does, particularly if those questions are egregiously off-topic for this site as you note.

could we not show a note in bold, every time the "ask question" page is hit, that tells users to that if they have discussion-oriented or otherwise subjective questions, they should take them to gamedev.net

We do have some specific help on the sidebar of the ask page:

How to Ask

• Is your question about game development?

• We prefer questions that can be answered, not just discussed.

• Provide details. Share your research.

If your question is about this website, ask it on meta instead.

That also links to the FAQ and asking help page too: https://gamedev.stackexchange.com/questions/how-to-ask

I don't know if it'd be appropriate to speculatively link to a specific discussion site, but certainly we do try to make it clear that subjective questions aren't what we do here.