It would really help if you could make a chart of the class abilities by level.
Using the original soulborn as the base line what would you like to increase or decrease, reliance on incarnum feats, reliance on conventional meldshaping, reliance on class features, and reliance on martial class outline (high hd, perfect base attack bonus, weapon proficiencies).
Because right now my advice is to prune the class back to it's basic skeleton and then add each ability one at a time.
Using the original soulborn as the base line what would you like to increase or decrease, reliance on incarnum feats, reliance on conventional meldshaping, reliance on class features, and reliance on martial class outline (high hd, perfect base attack bonus, weapon proficiencies).
Because right now my advice is to prune the class back to it's basic skeleton and then add each ability one at a time.