It has to have CFExpress B to do any of the 7K and raw codecs, but perhaps just a single slot.
If this camera doesn’t have IBIS, I think it will struggle. I use my R6 III way more than my C50 for video because it has IBIS (I like fast, manual focus primes). A big reason for the FX3, S1 II, and ZR success is that you can keep them small and handheld because of the IBIS. Plenty of ways to differentiate the R6V from the C50 (handle, XLR, timecode, cooling) and R6 III (EVF, mechanical shutter) and still have IBIS.
Not to sound dramatic, but I used the ZR and was blown away. The 4" screen should be mandatory for any video-focused camera going forward (nice work, Kinefinity Vista).