The new matrix field lists out the action buttons (e.g. add text, add quote, etc.). The buttons quickly run out of real estate. It's not very scalable. I would like to suggest that we have one action button, maybe just 'add' which upon clicking reveals all the available repeater items (e.g. text item, quote item, etc.). Consider the animated gif shown at the address below (taken from a page builder plugin for one of my other favorite CMS).
https://github.com/TimOetting/kirby-builder
Thoughts?