More like replace Atlassian Bamboo. I've had traumatic experiences with sleek CIs. To me it's like the Scratch "programming language". Good for beginners, and then you find yourself wanting to copy/paste your workflow or make any sort of involved change and having to rewrite everything in a Jenkinsfile.

Now, I'd like to be wrong. But I doubt a UI can get close to plain text for this kind of thing, it's just very difficult for software to translate boxes into code.

Until then, there's a reason our tooling is text-based to this day.