In looking for undiscovered patterns or messages in Q posts, a starting point I wonder about is what kind of information Q might want to convey (and therefore encode.) I mean "kind" of information not about the subject matter, but a more general class.
For example:
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We know the Plan is not disclosed with a timetable, so it is unlikely that information of the form "X will happen at Y" is encoded. "Future proves Past". But it is possible that information is dropped in a time-independent way (in advance but without the key of time information) and later referenced in some way that points at a previous drop to mean "this is relevant now". The purpose here is that earlier disclosure can teach concepts or convey a map that, having been previously disseminated, results in faster absorption and comprehension at the moment when it's activated (vs first disclosure at time of relevance.) For this class of message, the content itself may be absent in the activation marker, what's present is just a pointer to a previous drop (can be use of a keyword, reference to a post number, etc.)
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Where to dig. This one is obvious. Q can't say something explicitly due to restrictions, but can say "look under that rock. Yes, that one." This would be to get awareness of information into the public domain. For this class of message, the content itself is absent, what is conveyed is a pointer to the dig location.
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If sensitive information is present and encoded, that looks deeper into the plan (it can help to have anons aware for easing public communications during the storm), it may be encoded in some extremely difficult to decipher format, on the presumption that anons are more likely to find it than cabal. If this is made explicitly difficult to find to keep cabal from knowing, then it immediately follows that anons who decode would be expected to understand that they should keep it to themselves and not share their decode on 8chan (turning it more public and therefore visible to cabal.) (I have not discovered such a message in drops, although several times I think I figured out some part of the plan where my immediate thought was "this should not be shared for plan opsec." Same could apply to certain kind of encoded info in drops.)
There may be other classes. Thinking about WHY Q wants to encode information helps for considering HOW it might be encoded, what kind of patterns to look for.
Contrast to the classical code-teaching example of aliens wanting to communicate with humans despite no common language. It's expected that early teaching involves math and patterns to "learn our comms", you can go from numbers to materials by making a jump to patterns of nuclear physics to identify elements, etc. But there, the learning slope is literal words. What is the slope here, what kind of content might Q be trying to teach us to read and decipher? I mean by class (such as above, understanding why info is not stated bluntly by class of rationale, then thinking about how you'd build a teaching pattern to lead people to learn comms)
Seems more interesting than just looking for confirmations of existence like delta timings, or patterns of words in drops … all that goes from "I see this thing on the surface, what does it mean?" What if we ask what Q might want to embed, and work from that angle?