Make "Symbolic Seven" (or some other name) a supertrope and split off the various types into subtropes when they gather enough examples.

Pros:

• Different tropes for every usage.

Cons:

• The "various types" would be only differentiated by being different Lampshade Hangings on the supertrope.

Rename as Symbolic Seven, keeping all examples of the number seven being used symbolically. Do not split based on the number's different associations.

Pros:

• A single trope about a single Numerological Motif, analogously to Rule Of Three, One Hundred And Eight, or Six Hundred Sixty Six.
• The number's different meanings are tangled and hardly separable.

Cons:

• Might include meaningless examples of the number's usage