No not really, although I do like Turkish in particular, and the inventory of vowel phonemes is extremely similar too, except I have no dotless Iı /ɯ/. I wanted to do something different though. So while words with what I currentyl call the "neutral melody" do observe front-back harmony as they would in Turkish for example (I'm aware that there's some exceptions!), as soon as they get e.g. declined from absolutive to ergative case (nouns) or from the indicative mood into a different mood (verbs), they violate harmony. And it's exactly the nature of this "melody" (violated harmony) that conveys the declension / conjugation. Verbs aren't conjugated according to tense, aspect or person though, and nouns don't have number either, so quite a small number of permutations suffices.Oh, interesting. So it's not exactly like the systems of vowel harmony in, for example, Finnish or Turkish?
All this may read quite confusing and convoluted without examples, and maybe it will eventually - or rather soon - also turn out that it's not actually feasible at all to work with such a language, but I'm trying!