Is the word "finicky" appropriate to describe fine, important, details, that may escape the inattentive eye?

In the sentence:

In case you learned the language, you may be interested in these finicky details, as they often go unnoticed by the untrained or inattentive eye.

Consider we’re talking about fine-grained detail about a language, which may escape a less experienced person’s grasp (like the connotation of finicky does to me, as a non-native speaker).

Now, consider as well that the detail – despite seemingly trivial – might be or become interesting to look into, although it is often ignored. E.g, dialectal word usage specific to your town, that a foreigner will pick a 100% in its normal sense.

Also take into account that my question comes from the apparently disparate connotations I found in the dictionaries.
See:

Oxford Learner’s Dictionary

1. ​(disapproving) too worried about what you eat, wear, etc.;
   disliking many things
2. needing great care and attention to detail

Merriam-Webster

1. extremely or excessively particular, exacting, or meticulous in taste or standards

My teacher is finicky about spelling.

2. requiring much care, precision, or attentive effort

a finicky recipe

[disapproval] Even the most finicky eater will find something
appetizing here.

So it appears to me that there are a neutral and a disapproving connotation.

I also found the similar fussy, fastidious, exacting and to a lesser extent dainty, among others. All had definitions that seemed to imply an actor rather than an object, mostly with a disapproving connotation.

In my phrase, I am concerned whether ‘finicky’ doesn’t feel neutral. I’m also interested in alternatives that fit this context.

Thanks.