A project I maintain has an experimental branch that takes most pull requests unless they have obvious issues (which I ask the author to fix). Only things I hav

A project I maintain has an experimental branch that takes most pull requests unless they have obvious issues (which I ask the author to fix). Only things I have not accepted so far were major GUI changes that I considered confusing. (I did accept one change that basically redid the entire GUI because it was awesome). The merges back to the master branch are several months apart, but I think it's a good idea to do deep quality control on the code AFTER it's merged to keep contributors engaged.