So would AMD, density optimized cores like Zen4C would likely not be a priority without e-cores and products like Sierra Forest being on the roadmap. The question now would be just how far would this density optimization path would go. AMD right now minimized the core size by stripping out cache and lowering the frequency target considerably. Intel went with an approach that also includes a full hybrid design where you get smaller cores with fewer features hence why the e-cores are still fare smaller than Zen4C.