[latortuga]

I think the dots / temp gauge should be combined here. 1 dot / 2 dots / 3 dots. The temperature gauge is hard to tell how full/empty it is which the dots help with, and single dots make it difficult to remember whether left or right means low or high.

[joosters]

I don't follow your single dots argument? There's no right or left, one dot = low? Plus, as the OP says, irons use the exact same dot count, so nothing else is needed.