@Theklan, @JVargas (WMF), @Amire80 -- we noticed (via @Tgr) that "parameterized user pages" is one of the draft recommendations from the Diversity working group. I wanted to point out this page to you, in which the WMF Growth team is in the early stages of thinking about a very similar-sounding project. We're considering working on it later this year, and hope to have any thoughts or opinions we can get. Hopefully it is a good sign that both the Diversity working group and the Growth team have interest in this!