Raven Crowking
First Post
First, thanks for taking the time to lay out some concrete definitions. This post was very well thought-out and I think it helps advance the conversation a lot.
You're welcome.
I am aware that terms have been used in this discussion without clear definitions as to what those terms were. Having opened the discussion of definitions allows others to subdivide terms so as to make the conversation even more transparent.

How does the concept of a "campaign element" fit in with your definitions? Is it basically the same as a "situation" or is there a distinction?
I am not certain, but I think that "campaign element" might conflate what I called "hooks" and "situations".
However, it appears that, going by your definitions, that The Ghost was probably thinking about something more akin to your "Hooks", but perhaps not so blatant. So, is there a concept that fits between a Situation and a Hook? One in which there is the opportunity for reward (rather than just the opportunity for interaction), but which doesn't have a strong DM-generated lure to entice the players?
I suggest "Weak Hooks" are hooks which the DM does not necessarily intend to be followed up on, which are thrown out to give players options, whereas "Strong Hooks" are those which the DM intends to lure the players into following.
Any of the Hooks you present may be Weak or Strong, depending upon presentation (which, obviously, includes how many other Hooks there are....Your #1 would normally be Weak, but is Strong if that is the only option. Likewise #5 & 6 would normally be Strong, but may be Weak if they are only two of several options).
RC