As for other feats you could use maybe bonus essientia to get more distance with your blink shirt, maybe one of the other incarnum feats. To be honest I am not 100% sure on the more specific details of Incarnum.
I looked at them, almost the entire book of Incarnum requires at least a CON of 13, and when you are a Necropolitan, that doesn't work out so well.
Undead Meldshaper feat changes the requirement to CHA. It's actually quite useful if your DM lets you do the "I'm a necopolitan made by a dread necromancer with the corpsecrafter feat' trick. between that and Vitality belt, you end up with a stupid huge pool of HP, making all the other undead (the ones who don't have unholy toughness anyway) totally jealous
Hmmm good point, what is most frustrating is that since I don't know much about Incarnum either, it looks like this feat is basically a requirement for me to have...it also looks like it changes it to Wisdom, actually, unless I'm looking at something incorrectly. It doesn't appear to open up any of the feats, either...again, I might be reading this incorrectly.