This is a very awkward configuration.
I was thinking the pro would be a butterfly of the existing setup for effortless emulation, but 60 CUs puts it very close to XSX architecture.
Keeping the same amount of FF hardware, same bus size, but now with 16 DWGP per Shader Engine, 2 shader engines, with 1 DWGP disabled for yield, this is the only way to get to 60CU layout. Or it's 15 DWGP per SE, and 1 disabled netting 56CUs.
It's effectively XSX, but with a smaller memory bus, less cache, and likely much faster clock speeds. The only raster improvements I'm expecting is going to be on the clockside of things.
Really interested to see how this one turns out. Based on everyone else's previous commentary about XSX having the worst amount of cache or bandwidth per CU, this is going to take the cake.