10 Reasons why there could be a Problem with just "R-Wire"...
B'coz it is all about (a)heat dissipation and (b)quality of vape rather than just vape. We all know about "hot legs", from our genesis days, how it effects our vape experience, don't we? Thus, having that "un-utilized" length of heated wire running across the ceramic cup's centre hole is the problem.
It'd produce the "hot rod" effect, which will keep the ceramic cup unnecessarily overheated and contribute to:
1. A metallic taste to the vape, b'coz hot fumes from that part gets linked with vapor,
2. A ceramic taste to the vape after a while, when micro particles from the cup start shredding,
3. A rubbery taste to the vape, since the 'O' rings at the bottom 510 pin start melting,
4. Eventual leaking, when those "O" rings deform over time,
5. Add brittleness to the ceramic, thus the cup shall break sooner than would've otherwise,
6. Overheated Sophia body will keep the juice heated in the tank, which'll start to get thicker,
7. The tanked juice also shall get darker, loose some of it's properties, effecting the vape quality,
8. A smelly vape. All the above adds to fragmentation of the vapour to over odourize it,
9. The warmer tanked juice could effect the "O" rings of the glass, which might loosen and leak,
10. Wasted heat wastes battery life. So, for the same vapor production our batteries will run less time.
The foregoing might not be blatantly visible if we use the Diver once a while, but peeps like me who tend to chain vape ~ this could be a big issue, WILL HAPPEN. Yes, I have tried it. Done that with my Diver v1, when I didn't have a Wire Welder.
There is a reason why CE2 type setups need a NR-R-NR build, IMHO!