I’m going to have to disagree with you there. The compile times are long, the error messages are worse than useless, and tikz diagrams are almost always unreadable messes.

Large swathes of mathematics, computer science, and physics involve notations and diagrams that are genuinely hard to typeset, and incredibly repetitive and hard to read if you don’t make heavy use of the macro system. Integrating some actual programming features could be a game changer.