Looks great. An enjoyable alternative to typing randomly selected English phrases. Would indeed be neat to add some form of progress tracking and/or bookmarking.
I like the ease of use and I greatly enjoy its diary feature. This provides simple keypresses to open an entry for today or yesterday, without requiring to think about the date. It provides me quick access to make notes and continue my way. Similarly, the creating of new notes, inserting likes, and navigating these links, are made relatively easy with commands provided by vimwiki.
I suppose that it is not that difficult to recreate the basic behaviour of vimwiki with custom commands and navigating with `gf` between your notes. However, for me vimwiki provided an easy way to get started in an environment where these commands were provided out of the box. Since then, I have gotten used to, and somewhat attached, to vimwiki and have kept using it.
I adopted vim-wiki a little while ago and have really appreciated its functionality. I like that all files are plain text and located in a single folder. It is easy to reach from anywhere in vim, providing simple means to quickly make a note of todo/diary items during work.
Also, I greatly enjoy that it allows for making local references in between your wiki files. A simple link towards another wiki- or diary-entry allows you to jump to that note. It is not only nice for navigation, but also to explore connections between your thoughts. To understand those connections better, I create a simple script (vimwikigraph [0]) to draw these connections using the DOT language [1].
In that way it is similar to Roam [2] I think, although I have not used it myself.
I greatly enjoy publications that provide their implementation (or a simplified) version. Playing around with the problems yourself, can give a much greater insight and understanding in addition to the fundamental, written work.
However, I did encounter situations where providing the direct implementation was seen as a bad thing. It was thought of as `giving away your advantage' and squeezing out multiple papers before even thinking about publishing the code had their preference.
It is great to see more and more research publications go together with their implementations.
Personally, I am a big fan of Vim-Wiki [0]. Provides basic note taking, can be reached anywhere from Vim. It is great for jotting down TODOs, while it is also suited for more substantial, longer thoughts. You can add links to other notes as references, or just for quick navigation. These internal links can then be visualised, to highlight the connection between your notes and thoughts [1].