Mostly to force myself into learning emacs more deeply. I’ve been using them since 2016 but I feel like I’ve hit a wall with how well I know emacs and elisp.

not OP, so personal opinion here:

Starter kits are usually opinionated, have too much in them that I may not want, I may want to do things differently, and like was said in a sibling reply, I would also want to understand my own config better...