Proto Krūvtah

Consonants
Phonology by Kauf

Vowels
There are no diphthongs, only vowel/semivowel combinations.

Any non-palatalized consonant can be labialized, but such a consonant can't be word-final or any part of the cluster.

The vowels  trigger palatalization, and whenever they follow a retroflex, uvular or glottal consonant they become [ɛ ɛ:].

(@Kauf, in case you miss the old vowel system I'll make the descendant I create sound changes for develop it.)

Phonotactics
Any onset consists of at least one consonant, this being either a plosive or a non-glottal fricative.

Overall, the syllable structure is (C)(C)CV(C). Three-consonant onsets consist of either two plosives and a liquid or a fricative, plosive, and a liquid. Two-consonant onsets can consist of any two consonants of any type, but these can't be of the same type and PoA.

A coda can consist of any consonant, of any type and PoA.