I think it is good that the forum does not have too many categories. But one might be an interesting one and worth to be separate? What about adding:
Keymaps and keyboard layouts
A place where you can describe your keymap or where one can discuss alternative keyboard layouts.
I don’t think we need a dedicated category for this purpose. Currently, there are 29 General topics, 20 Configurations topics, and 4 Modding topics.
Currently, only you shared your configuration in a Configuration topic. If there will be a significant number of similar posts, it may make sense to add a new category as suggested, and even then, I’m afraid that topics will be mixed up between categories for no good reason.
My opinion: it would be nice to have separate categories for sharing configs and asking for help with config.
Regarding keymaps. You posted your keymap Karel and part is self-explaning, but a lot is also not. I would love to learn about your configuration in detail. I am sure one can get cool ideas from that! 
Ok, will copy that into a new thread… please post your questions there!
Maybe I could rename the current “Configurations” category to “Configuration Question” and open a new “My Configuration” category.
I’ve added a new category and renamed the old one.