I am a little late to the party on this, I just found out about the QnA thing. Thank you by the way for spending the time to ask about some features. As for my answer. I do agree with having a build queue and a ctrl click build queue for buildings (Possibly with a limit)
I played the originals growing up, with CnC Tib Dawn when I was just about 7 or 8 years old. Having just the 5 unit build queue in CnC Tib Sun was a massive improvement.
Now I am not sure if this was mentioned anywhere, but although this would be great for the remaster. I do hope we have the original game and the remastered we can have together so newer people can see the original and the newer variant. (Kind of like what they did with Homeworld remastered)