You realise that coming in new and wanting to immediately overhaul the UI/UX is not a sociable thing to do, right? In fact, people new to a project suggesting a huge overhaul is generally a red flag for their understanding of the project or their likelihood of being a good-faith contributor.
I do agree that the UI/UX of several tools needs an overhaul. Given the history of such efforts across many open source projects, it seems likely that a fork is the only way to pull that off. You'd need a talented UI (and fixup dev) team to make it worthwhile.