I’m all for re-examining design decisions. A lot of people want the map to be less crowded, but in BG1 that meant a lot of not terribly engaging walking over empty space, so I’m okay with Larian’s handling of the map. The four character party limit also works better in 5E I think, as individual characters have more to do in their action economy than 2E.
I think some harmless call backs are fine though. BG3 certainly doesn’t need a set of undergarments made of metal, but I think it would be fitting if it did.
That said, while I do get irrationally nostalgic about the endless rerolling on the Infinity Engine games, I do hope and think Larian can do something a bit better. Most people are rerolling to get really good attributes, so rolling 4 and dropping 1 as you suggest might be a better way to go to just diminish the time spent clicking.