Why not create an option to record the pronunciation of each syllable of a word?
I checked the Google TTS and Ivona TTS can not utter each syllable of a word.
I think it's necessary for native speakers to do that work.
my biggest reason is that the polyglot Luca Lampariello recommends listening slowly to each word in audio.
The problem is that sounds change depending on their environment. So pronouncing words syllabically does not necessarily help you to understand them or pronounce the correctly when speaking at a quicker speed, or even when saying the word slowly as a whole word. For example, syl lab i cal ly ( which is how I would have divided it when doing drills in elementary school) is pronounaced sihl ab ihk kli/.