Not to particularly pick on you, but I recommend people suggesting features for Dialcentral to post in the DC thread since I'm more likely to notice it there rather than Dialcentral, GIzmo, and GoogleVoice issues here.

I have an ... odd use case which is why I've never gotten around to integrating with the contacts app. I have a contact list source that does not support sync. So occasionally I blap my list from that source in Dialcentral and GPE Contacts and then reimport in both. It is something I'll make note of and hopefully sometime figure out how to do it.