I am curious, why the eye roll?
For 1, I think you can plug a keyboard in and use the number keys to select the option you want. I'm not sure if BG3 has keyboard support for PS5 but the number keys are how I select dialog on PC at least.
From the videos I'm watching there is no keyboard connection for the console ( I cannot test the Xbox). But that doesn't mean it wasn't changed and I need to personally test that. But while I can test that because I have multiple keyboards not everyone does and not everyone keeps their console next to the computer. Also, including an arrow next to a dialog choice doesn't just affect disabled players like myself. It can affect able players as well, so there should be one.
A thought I just had. If there is a color aura around dialog choices, that I'm just not seeing, Larian could make a slider for deepening the color contrast for choices.
