It appears to me that the white, or normal, Storylets that aren't part of an event or longer story are infinitely repeatable. As I level up my Qualities, I have been unlocking more, but have not been moving on to these higher-level tasks because I have been collecting the rewards from the lower-level ones.
I'm now tempted to switch to the new Storylets that I've been neglecting, for higher Quality gains and to break up the grind. However, I'm concerned that if I gain too many levels in the associated Quality, the old Storylets will start to become trivial and fall off.
Will I be able to keep my easy source of items if I continue to progress?
Best Answer
No, any white (regular) Storylets that you are eligible for shouldn't disappear, but you may eventually become ineligible for them.
Like you've said, while Storylets of other colours may disappear after they are completed, white Storylets normally don't.
Here is an official source on the matter (taken from the "What are Storylets?" section of the in-game help):
Now, what may eventually happen is that you find yourself ineligible for old Storylets. While most Storylets have a minimum Quality level requirement, some have a maximum level requirement. If your Qualities exceed a maximum level requirement, the Storylet will be locked.
Here is an example of a Storylet that has both a minimum and maximum Quality requirement (which I have exceeded):
What can be even more confusing, however, is that while some Storylets may have maximum Quality requirements, they aren't explicitly told to you.
Here is an example of a Storylet that only says "Unlocked with Shadowy 32", but that has been found to be no longer available to players with Shadowy 47 and above (See "Rob a honey den" in the Echo Bazaar wiki):
I've only really seen this happen with Storylets that take place in Veilgarden, Ladybones Road, Spite, and Watchmaker's Hill and only with Storylets that just require one of the four major Qualities (although I can't be 100% sure).
While some might find this annoying, it seems to be done as an effort to keep these locations from becoming cluttered with Storylets that are largely irrelevant to higher level players.