Nothing. When you want more throughput, pick a setup with more cores. HT was good (not that good but still good) when the goal was performance per die area, but

Nothing. When you want more throughput, pick a setup with more cores. HT was good (not that good but still good) when the goal was performance per die area, but now we live in the area of performance per watt. Doubly so when looking at laptops, but also in all other areas except perhaps gaming PCs (but even there, throughput at high wattage will eventually lead to throttling).