Hi @SamWilsn and @lightclient .
This is not really an issue but it is the easiest way I found to be in contact with both of you at the same time.
I took the liberty to start a project to have a small ETK web site (including the playground that Sam asked for).

Many links are broken, or point to temporary places (install for example leads directly to github and should be replaced by a real guide) and even the design is quite "simple" (you can notice it in the playground that is just two painted textarea haha), but I thought it's good that you are aware of it and to have a place where we can discuss ideas.

By the way, I also made a logo for ETK :).
The temporary link to the site is this: https://etk-web.vercel.app/

I hope you like it and do not hesitate to ask for all the features you consider necessary.

P.S: If you have more resources (like https://github.com/quilt/vim-etk) or examples that you have written using ETK and can be added to the resources section, feel free to mention them here and I will add them as soon as I I write that section.