do you think it would be possible to get mentioned outputs from your Amiga Computer?
that sure would be nice, displaying high resolution on your tv in higher definition than far inferior composite which looks blurry and unimpressive.
Neo Geo for example can be modified(these came out in 1990's) and look what people can get out of them with proper modification.
they are very powerful(considered by many to be the most powerful 2d systems ever created), but they are displaying its graphics in relatively low resolution, think how Amiga would look like on your HDTV!