I think these groups of people would benefit from this idea:
Everyone who wants to have a clickable solution to make great pages without spending too much time on that.
Why I think they would benefit from this idea:
The ready-to-go solution, much more to offer than the actual solution in Mautic.
I think Mautic developer should put efforts to make automatic marketing works best is possible, why spend to much time on something (own web builder) when a ready solution is available?