This sounds nice, but what about supporting operating systems besides for Linux and MacOS? A big part of using continuous integration is being able to test your code on the various platforms you deploy on. People have been asking for FreeBSD support since 2014[1] and Windows support since 2011[2]. For lots of projects not having Windows or FreeBSD support makes Travis CI not even an option for a CI tool. And from the outside looking in, it seems the Travis CI team doesn't care about adding support for other operating systems, it's been 7 years since the windows support issue was opened and there appears to be no progress.
[1]: https://github.com/travis-ci/travis-ci/issues/1818 [2]: https://github.com/travis-ci/travis-ci/issues/216