I have many templates relating to different categories. As a workaround they are contained within other template pages which I have named as categories, but they also show up as templates, and even if they didn't, the choose a template option is now very busy, even more so with these template container pages showing.

I would like to be able to create template category containers where I can put my templates. And the containers are then what is shown on the choose template screen, I can then click on a container to open up and show the templates within instead of all the templates being shown at once.