There is no rushing, we simply need to ensure that this platform follows the values of openness and collaboration we built the Open Source Design community on.
I suggest everyone to read the origin story of Open Source Design and also look at the list of core people and why they are considered core.
The admin team of this platform of Open Source Design should be filled by people from that core team. They all have a proven track record of being active in this community long-term, and also administrate other platforms like our Github, Twitter and Open Collective.
Other core and long-term members should be elevated to the highest trust level available (
4 - leader), as @bnvk already did and stated above.