Redesign GCN or focus on viable markets like the mid range. it's not like HBM made Vega efficient, it was still hot and inefficient. so you basically suffer from HBM downsides while still having TDP issues. it just makes no sense for me. IMO AMD should have scaled Polaris to bigger chips, using GDDR5/5X and while being less efficient than the competition offer a product that doesn't suffer from availability issues and can be priced very aggressively.