I don't think many poeple would ask their questions in there so it would be the same situation as now, with people having to reply to a question in a different channel. If I ask a question in #staff-help, it's because I specifically want an answer from a staff member that I can somewhat rely on. Otherwise in my opinion #english works fine, if I want an answer from anyone, I'll ask there. Questions often lead to discussions about the topic so poeple would probably have those in #community-help all the time.
Maybe they should start temp banning people replying in #staff-help more often. Warning > Kick > Temp Ban.