Considering 4 out of 5 questions deal with it directly/also include it, it seems to make sense to fold the two together. Thoughts?
Intonation and pitch accent are different. Accent marks the presence of a large phonemic drop in pitch. You can ask a question with rising intonation, but this doesn't change the word's accent. Some particles have different meaning with different intonation, but again this is not a matter of pitch accent.
I'm against making tags for two distinct concepts into synonyms. Instead, we should try to use each tag when appropriate.