Collating thoughts on this:
- Keep the narrative fresh. Don't let it get stale and repetitive.
- It's okay if someone prefers using their top approaches; preferring to handle issues in ways we're good at doing things is natural.
- It's okay if the party, between themselves, only tends to use their +3 and +2 approaches. Naturally whoever's good at a task would be the one to attempt it.
- Scale difficulties according to the narrative. Some approaches make a problem harder, not easier, to solve, even if you're better at approaching problems that way. (Sometimes it's impossible.)