It seems to me that, as you already have an AlNiCo Warpig, and you want something more open, dynamic and complex, that a ceramic pickup is not the way forward. You'll get better dynamics and versatility from a lower output pickup, so staying in the AlNiCo magnet range, that would be Nailbomb or down to the VH range, so pickups like the Black Dog, VHII and so on. I think it would be a mistake to get a ceramic pickup. I find my Black Dog very open, although that's in a totally different guitar. Have you asked Tim for his thoughts? That's what I would do.
Roo