I don't really find it to enhance TH. I was never a menthol smoker, but I've played with it in some liquids. I find it to just give a slight menthol flavor and have a nice cooling effect on the inhale.
The most efficient way to add TH is to up the nic, but a lot of people don't like that. Also, spicier flavors (cinnamon, pumpkin spice) or more acidic flavors (lemon) will have more TH. Also, delivery method can matter as well. With the same liquid, on the same device, I get more throat hit from a dripping atty, than I do a rebuildable atty, than I do a carto, than I do a Vivi Nova.