It is always a bit difficult to comment on something that has to do with creativity, because one's own sensations (of the composer) and those of the listener mix together, even if they are not openly declared.
They conceal an expectation that is a consequence of one's own journey and the ability to be critical, especially with oneself, and then with others.
You wrote that in effect sometimes it is better to wait to define a piece before publishing it, something that clashes with the impatience to publish it.
However (there are almost always 'howevers'), one must always deal with the listener, who, even if they cannot put themselves in the shoes of the person who composed the piece, can still listen to it and report whether or not they had certain sensations and/or emotions.
The fact is that there are people who have listened to and continue to listen to so much music—both repertoire, then contemporary (understood as instrumental, correct, I mean correctly written on the staff or score and not left to the free will of the performer as might happen with some genres), and electronic (also from a certain period or current) of a certain complexity—that certain solutions, if they are not supported by even a single fragment that deviates from the listener's prediction, do not produce the desired effect in the latter from the person who composed the piece.
I am always of the opinion that even a simple piece must have at least a hint of some minimally "interesting" passage (which may or may not be for the listener, we are always back to that, but in some cases the composer realizes, or must realize, whether what they are writing can have this effect or is "only" supported by their own conviction, which in turn is supported by a euphoric state of mind; and here the rift always occurs between the expectations of the person who composed the piece and the resulting criticism. The criticism is not only negative, but some mistakenly think it is one-way; I received quite a "beating" on the composers' page on Facebook because I "dared" to leave a negative comment on some pieces by a girl, calling them predictable, and I was told that when it is like that, it is better not to say it, except in private, but when the criticism is positive, you can shout it to the whole world, because otherwise you crush a person, you do very serious damage—which I think would be done if one were to say "keep going like this" despite not thinking it, doing so only for future benefit, and very often that is how it is, I challenge anyone to deny it; in short, I was also told "who are you to judge in this way?", having first of all argued my point, even if minimally, and I replied "so I am nobody when the opinion is negative, but I become someone when it is positive; what do we do, is one-way okay in this case?", we aren't kids, after all), otherwise, as already stated, one runs into things already heard, which is already difficult to avoid when composing in a more complex manner; when the composition is so simple, the risk increases exponentially, so it is not guaranteed to have an effect.
Lately I have been "reconnecting" with simpler sounds because that is what I need, but at the same time, in a certain sense, I "do not justify" the use of overly predictable successions "only" because they have a certain effect on me; certainly, one should still work on them a bit to make them as unpredictable as possible while remaining minimally pleasant, knowing that there is a repertoire that has almost certainly adopted those solutions, even if in another compositional context (a specific piece) they take on their own value.
That being said, I am also for evocative, contemplative pieces, but they must have something unexpected (even just a single chordal solution out of 300, to use a very banal example), or at least something that does not tire and invites repeated listening.
Returning, however, to specify that I know very well how much a newly composed piece, in a specific emotional situation, can induce one to think it might have a certain effect on others, but one must separate (and it is not easy) one's own conviction from reality.