I don't know what you mean by "deep meanings" but the soap suds tricking down the windows were just one of many places in the Matrix world where the trickling numbers of the Matrix were mimicked by Matrix-world events. For another, look at the windows of the car where Neo has the bug sucked out of his stomach...the rain trickles down in a similar pattern. You think that's just random? Not in such a tightly shot movie.
I don't know what you mean by "deep meanings" but the soap suds tricking down the windows were just one of many places in the Matrix world where the trickling numbers of the Matrix were mimicked by Matrix-world events. For another, look at the windows of the car where Neo has the bug sucked out of his stomach...the rain trickles down in a similar pattern. You think that's just random? Not in such a tightly shot movie.