A few updates on this since the last one.
For those of you who were looking for a new app, there now is a full mastercomfig web app, redesigned for better usability here: https://mastercomfig.com/app. It can be used offline/standalone, allows you to customize the config easily, and on Chrome based browsers, supports directly installing to your TF2 folder. In a near future update, I plan to add quite a few new scripting options for binds, class configs, weapon scripts and more, which should make the app a one stop shop for customizing TF2.
For those of you looking for a more traditional setup, in 9.7.0 I've released a full autoexec (you can find it listed on the "Other downloads" link in the app or here). It provides a low quality level by default and while it is not as featureful as mastercomfig presets, it provides a familiar setup that can be used as a stepping stone to mastercomfig. And in a previous release, I started making ZIP packages available for mastercomfig, which provides an editable fully featured setup without VPKs, which can help for moving to full mastercomfig setup, while still being decently familiar and manually editable.
As for documentation/installation instructions, that's still been an ongoing process. I've made quite a few improvements to the documentation to make it clearer and more practical. On our Discord, I've improved the support process with a ticketing approach which gets you help faster than ever in your own automatically made thread.
And lastly, for update frequency: as planned in #41, we now have two release channels, being the typical versioned releases, and the dev build, which recently got improved support within the app.
If you have any questions about the new release, the new autoexec.cfg, or want to give feedback, don't hesitate to reach out! I'm happy to help and make things better.