@durtle Thank you for your question. At the moment, we are focused primarily on fully fleshing out N2 material, working our way through user reports/feedback, polishing the site, and adding some missing grammar points in the lower levels (N5-N2).
To answer your question, one does not necessarily have priority over the other; we would like to start working on adding N1 alongside additional grammar points. Once N2 is fleshed out, we will be able to devote our time to N1 and future grammar with the hope of having something available to you by this April. Cheers!