Quality Lock feature?

BSB's and crates already have a "sorted" or "unsorted" feature.

True, but the way I organize my goods, I have a "sorted" 70+ QL BSB and then an "unsorted" Low QL BSB, for example. When I come back from killing mobs or thinning my herd, I have to expand the items I have and drag 1 by 1 those that are 70+ or under 70ql into their respective BSB. If I have over 50 items I need to put into the BSBs, I'd be click/dragging 50 times after looking at the QL and deciding which BSB each one goes into. Or, I can expand those items and sort my personal inventory, then click/scroll/multi-select group of 70+ql items and drag into that BSB and so on. But I'd have to do this for each group of items in my inventory.

If we had the Quality Lock feature and the "sorted" BSB is locked at 70QL, then I can drag multiple group of items into this BSB and anything left over in my inventory are the lower QL items that I can then drag into the "unsorted" low QL items BSB. I would just have to click and drag 2 times, once for each BSB. That's the benefits of this feature above and beyond the "sorted" or "unsorted" feature.