Potential feature - accelerated compilation

I recently came across this question on SE, where someone has managed to make pdflatex much faster (particularly for large documents) by "pre-compiling" the preamble. The accepted answer mentions that there's a package mylatexformat that can assist in this process. I was wondering if you thought it might be a feature worth introducing to tinytex? I wonder, also, if a similar approach might work with xelatex, as that compiles noticeably slower than pdflatex, although I don't really know why so maybe this won't help.

Start by reviewing the linked TeX Stack Exchange discussion and the mylatexformat package, then investigate how pdflatex and xelatex compilation are invoked in tinytex. Determine whether pre-compiling the preamble is feasible for both engines and define a measurable acceleration target before proposing the feature.