Sony PXW-Z200 vs PXW-FS5 4K footage comparison. Is it time to retire the FS5 from our inventory?

The Sony PXW-FS5 have served us very well over the years, and we have been half-hearted about retiring them from our inventory. They need to go, if they can't meet our bottom line for delivery standards. Are they still useful? Can they still hold up to the quality and look of more current cameras? Up till now, we have been running the FS5 with FX6 and FS7 for live news broadcast, did mixed camera docu shoots, and they have proved to be very robust and still cuts well with its predecessors. With our recent acquisition of a PXW-Z200 camera, we finally had time to do a quick and simple real-world shoot test to compare footage. Codec to codec, matching ISO, focal length and F-stops. Of course we knew we were comparing a current generation 1" sensor to a 10-year old, probably 3-generations old Super 35 sensor. Can the FS5 still hold up well against current cameras? Should we retire the FS5 from our inventory? The results of this simple test & compare did help us understand where the FS5 currently stand, and what directions we should be heading towards. Although the FS5 can still hold up in a 3G-SDI output scenario as a live feed camera against the FX6, the 8-bit recording codec is the current biggest weakness and limitation. Any discrepancies in look are usually smoothed out by liveU recompression during encoding and transmission, so they tend to level out the look. But if in a docu shoot scenario if we needed to acquire footage in 4K Intra 10bit 4:2:2 codecs, then the FS5 will definitely be out of question to be used for that project. Perhaps the FS5 is still a capable and useful tool in our inventory, but we won't hesitate to retire them the moment opportunity arises.