I've been using #AnnotatedEquations in my recent papers. I think it really adds to the readability and understanding of the math.

Here are some examples. It uses #tikz in #latex.

Let me know if you like it. Happy for any feedback.

@sibin it's aesthetically beautiful too. makes a huge difference for someone like me who has to puzzle through most formulas.
@neotoy Thank you! Yeah that was part of the goal -- to help improve the readability. Glad you like it 😀