Dimpling or pressing in ridges in a pot bottom isn't necessarily just about surface area. Something that creates turbulence generally improves heat exchange.
I played a little with vortex generators on the sides of a beer-can pot and it definitely helped, especially with a very full pot (full pots have more wetted vertical sidewall for heat exchange). Also, because it wasn't in the flame proper, it wasn't so hot there, so I managed with foil tape - very cheap and fast to fabricate, I could tuck the materials in my wallet like a business card if I wanted to modify a found beer can on site.
I'd suggest (this just occurred to me), that rather than tweaking the bottom of the pot, the pot supports could be arranged so as stir up the hot gases. All the pot supports I can think of are strictly radial. If they had angled vanes to mix the flow a little, that energized boundary layer wouldn't be so insulating. Another cool thing - twisted pot supports needn't weigh much more at all. And they would benefit any pot you put on the stove whereas HX fins only help on one pot.
This addresses one of those blind spots we develop when we focus on "base weight" = lighter stove, lighter pot. But HX fins on the pot, a better fuel efficiency on the stove, and insulation to let you seep your pasta all save fuel which DOES weigh something on your back.