Yeah, your workaround to let the server auto-delete and handle only the deltachat “Emails” works, if I wouldn’t need the emails in the classic MUA.
I need “Emails” (contact requests) more visible too, but not everybody wants it (and thus shouldn’t get disturbed by emails). So I think it wont’t and shouldn’t happen as a default.
Consequently, however, because configuration options shouldn’t happen in a way that prevent or don’t allow proper customization for yet others, I collected the optimized design.
With its 3 easy presets (similar to the limited “show emails?”), but based only on 4 more detailed options (not too much to implement), it should allow for full customization for everybody!