I grew up with home made tortillas and my mom would probably disinherit me if I added lard or something like that lol. So I’m very much in the camp of only salt, water, maseca and nothing else, but I think experimenting is always fun so that is up to you.

I would try making them a bit thicker, and like you said a warmer pan. Also, flip them sooner and then flip them back at the end if you want them to be toastier, that may help too.

Looks like your maseca mix could have used a bit more water to prevent the cracking on the surface of the tortillas.

Having said that, the whole thing looks delicious. I’m making some tomorrow after seeing this lol