I'm so glad this thread was revived! I havent had much chance to read archives, and these cards are just scrumptuous!
I wanted to chime in that I think adding a suit is interesting, as the 5th element or ether, immediately calls to mind a suit representing matters of the immaterial/spiritual. It is after all an important aspect, whether pursued or ignored, in everyone's life. However, as you said, if in doing so you only repeat what the Majors have to say, then what's the point? (Being a libra here, sorry).
Anyhow, what are your latest thoughts on the idea?