@futbuk I hardly consider that a problem, but a good thing; there are a lot of things that for some reason series only dare do if it be the entire identity of the series, and that annoys me.
Like
Queen's Artist being criticized for "becoming a '
yuri' series" half way through, apparently one can only have romantic development between two characters of the same sex — but not of the opposite sex — if the series be introduced from the start as revolving around that.
There was an interesting conviction posted on Youtube that
all characters should be bisexual for this reason; the problem with this idea that these things like "cross-dressing" and "same-sex romantic tension" can only be included, should they be identity of the series from the start, is that it severely limits the dramatic possibilities, it makes it impossible for something like cross-dressing to be developed later, it has to be introduced in the very first chapter, and that's just annoying.
Similarly, it seems that a character can only be "a trap" if that be the entire identity of the character, with very little else to the character. I applaud
Attack on Titan for having a trap main character, who started not out as such, but just became one later, and it's also certainly not the character's entire identity.