Totally agree!

Re an easier tool, I'm one of the co-founders of Graphite (https://graphite.dev), we built this tool literally to help you stack PRs on GitHub (former FB'ers who missed a stack-based workflow). It does not require your team to change their workflow. If you're interested in giving it a spin, happy to let anyone here through the waitlist, feel free to just dm me on twitter (@tomasreimers) or email me at tomas@graphite.dev

If you're new to the concept of stacking, you can read our post on it here: https://graphite.dev/blog/post/DThX8ffP1gmxWJChEv0y

And a tutorial on how to do it here: https://graphite.dev/blog/post/N8SOs49y4bYdV1Vjf5qE