Fair point. That does make sense, although you will have to forgive me as I have yet to watch Blade Runner, so I can't really testify to the movie's effectiveness in conveying its message, although I do agree with the thesis --> antithesis --> synthesis framework.
(FYI I have read Do androids dream of electric sheep?, but from what I gather it's so different that it's not an adaptation in the traditional sense anymore)
To clarify myself as well, though, I do actually agree with you on how the movie presents its themes. My statement about GITS coming out when it did is that perhaps people were more impressed by the themes that the work presented, rather than the way those themes were presented. While I am sure that the ideas of the nature of human consciousness in the age where everything is becoming ones and zeroes (among all of the other ideas in Ghost) were revolutionary for many people in the 90's, today they are more relevant than ever, as well as paradoxically mundane and less taboo. This leaves Ghost in an awkward position where many newcomers, such as me and you, find it leaving something to be desired in the writing/thematic execution department.
Again this is something that I find myself thinking about more and more as I watch more influential works such as this. The sense of demystifying media that one hears so much about and forming one's own opininons on them makes for a very unique experience imo.