Can confirm GitHub's process is poor for small PRs (if that's what you mean by "multi-commit features"). My team has mostly gotten around this with custom CLI tools (for pushing small PRs chained together) and web apps (for concisely viewing your code review status, both giving and receiving).

I’m a huge fan of https://github.com/VirtusLab/git-machete

Looks great, like a combination of the gh cli and the many options available for maintaining chains of stacked branches!