The “unique” feature the Apex Vapor Alpha devices offered was the RES. Without the RES they were just another mod device. Sure the design of the switch with the movable battery sleeve was different (and arguably not a great design), but it still basically did the same function as similar mods. The RES however, when it worked the way it was supposed to, was unique and convenient.
So taking that RES concept to the next level, it only makes sense to build one for the Cera. While the ceramic design of the Cera body is already unique, it doesn’t really have any advantages for an e-cig user. The RES would be an advantage for the e-liquid model, and since the Cera is already a monster (big & heavy), the extra weight would be insignificant.
While it is possible to make a 510 interface for the Cera, there are pros and cons to manufacturing it. TET will have to wait and see how well the new Cera atomizer/reservoir works and more important, how it sells. The ability to put anything with 510 threads on a Cera may not be worth the expense of manufacturing the interface.
I think TET should stick with the proprietary Cera atomizer/reservoir for now. The design of the Cera mouthpiece has a nice feature for e-liquid. The indirect airflow works great to prevent e-liquid from getting in my mouth.
The Apex Vapor Atomizer (AVA) did the same thing that other atomizers do but its design and construction were unique. Since the Alpha devices had 510 threads, it had to have 510 threads. Apex Vapor also knew there was a market for the AVA separate from the Alpha devices. I think TET should build their version of the AVA with 510 threads (since they own the patents) and sell it separate from the Cera. Then e-cig users could once again have the AVA technology and InnoVapor could go back to selling them separate. We still get emails and phone calls from people wanting to buy them.