it's a part of the rules, I'm just enforcing them. if there's a duplicate thread that's within the necro limits of 15 months since the last post, I'm supposed to lock it. No one gets in trouble when I lock a thread and no one is expected to find the threads. I understand finding them is difficult - I have to do it all the time - but that's a part of what I have to do in S&I.
for the suggestion, I support it. When I did drills, it was always an annoying part of it that I'd have to refresh. I, too, opened the quests in new tabs because that's the single easiest way to do it.