Good try, but in fact it is useless to use something other than Latex to write academic articles. Most journals in mathematics and engineering accept Latex, but

Good try, but in fact it is useless to use something other than Latex to write academic articles. Most journals in mathematics and engineering accept Latex, but I have never seen one accepting markdown. Which means that you will have to convert to Latex source anyway -- and in many cases make sure that the Latex code uses the style package of the publisher. This seems to me just to be asking for more trouble.