After this much time has passed with no reply, it seems likely that one of two things are the case:
1. BGA staff is concentrating all efforts on fixing broader website issues and so is not paying attention to this issue for the time being. One may notice that the site has intermittently malfunctioned to one degree or another a few times in recent months. So if the staff's key focus right now is improving the site reliability then that's very understandable and a good thing.
OR
2. BGA staff has considered these fifty pages of feedback from some of their most frequent users but feels that the changes ought to remain despite the negative impact. That would be more disappointing to many of us than the first option, but is of course a possibility.
Either way, ironically to some degree, we are in this pickle because the site is so good. What I mean is that if there were many great online board gaming websites then when a situation like this arises where we feel staff is not listening to the way their actions are harming our experience, we could go to a different site and "vote with our feet" as we would with any other product or service. However there is no other site nearly as good as BGA in real-time matchmaking, reputation filtering, or amount of Top 200 games available. So they have a bit of a monopoly on the market, and as with other monopolies like our electricity providers or rural Internet service providers, we have nothing much to do but complain and hope someone cares.