This image includes almost all of Omnarom's proper phonemes. The post-Omnarom languages exclude allophones (Gj, D, Dj, Z) and obsolete letters and sounds (IL, IR) while implementing a romanisation style that uses a single letter per phoneme.
These are early thought so over time I may change a few things here and there. Either way, Omnarom is basically a "dead language" now in that it won't undergo drastic changes anymore, these changes now reserved for the child languages.
Link
X. Cytilinsk
Very interesting stuff! Wonderfully complex and well thought out.