But are you at least ever going to consider giving people a choice (at least tab-wise), ie, making it easy to modify when they log in?

I am not sure what you mean "tab-wise". If you mean the favicon, then no, there are no plans to change that. If you hate it as much as you say you do, you should adblock the image; it won't be changing.

I never said it was, and I have a right to complain (granted, with limits of course, I'm not interested in trolling about it).

I think you have more than made your point.