I know this may be a laughable exercise in futility, but has anyone tried complaining about this to UA? I was going to, even got as far as scanning pre-merger and current versions of the boarding passes to include in my email, but then the project got lost in the shuffle.
Maybe I will try to email them as see what their response it. I also love the proud branding of the past and it was also always nice to see UNITED FIRST on my boarding passes.