The current description of the proposed scope of Rambam.SE
Proposed Q&A site for people interested in halakhah from the Mishneh Torah, Yemenite Jewish customs, Dardaim, and a general Meqori approach to Judaism
looks clearly like a subset of the scope of Mi Yodeya
a question and answer site for those who base their lives on Jewish law and tradition and anyone interested in learning more
The community of experts on Judaism that Mi Yodeya exists for is meant to include subspecialists on various more specific topics and traditions within Judaism, and it does indeed include individuals who are particularly interested in, for example, Chassidism, Scripture, Kosher slaughter, and Yemenite traditions.
Thus, both the content and the expert community described here are, explicitly and in practice, welcome at Mi Yodeya.
The chief distinction, other than the more-restricted scope, between this proposed site and Mi Yodeya is the set of shared assumptions. Just as Mi Yodeya assumes that all answers are from the point of view of (or at least compatible with) Jewish tradition, Rambam.SE would assume that all answers are from the point of view of Maimonidean (/Yemenite/Meqori) Jewish tradition. This point of view is certainly welcome on Mi Yodeya, but a site founded specifically on this point of view would just as certainly host a different flavor of discourse than Mi Yodeya.
So, yes, the scope of the proposed site is a subset of that of Mi Yodeya, just as Signal Processing is a subset of Electrical Engineering. However, it's still possible that Rambam could attract a distinct community from that of Mi Yodeya and host content with a distinctly different focus and flavor.
Practically, though, I strongly suspect that it will be very difficult to bring together a critical mass of experts on Maimonidean Judaism who are interested in English-language online Q&A on this topic. The broader-scoped Mi Yodeya is just big and active enough to be a mature SE community after over five years of growth, thanks to the relatively low overlap of experts in Judaism in general with people interested in SE-style Q&A. The Area51 process will determine this, one way or the other.
Yes, we certainly do. The world of Rambam studies and related topics are a discussion unto themselves that are in many ways highly specialized.
One of the reasons I proposed this site is because questions related to the Rambam, Mishneh Torah, etc. get clogged with arguments of what the Rambam "actually meant" in accordance with defective manuscripts, whether we "hold" or "posken" like the Rambam, and counter-assertions from the kabbalah.
This site would be with basic assumptions in place that all true scholars/students of the Rambam essentially agree upon. There would be no attacks, slights, dismissals, and other non-productive comments from those who follow more mainstream paths of Judaism. Even the methodology of halakhic application from the Rambam is fundamentally different.
Additionally, users would be free to question, criticize, or even deny the writings and practices of the kabbalah. They could do this, again, without the constant downvotes, backlash comments, and wasted productivity that comes with expressing such views on Mi Yodeya.
Again, YES. We definitely need a Rambam SE and NO this is not merely a subset of Mi Yodeya.
Thank you. Kol tuv.