Interesting question.
I did a reading about my spirit guide drawings, and I used the Marseille Hadar. The thing about such a deck as this, in that it uses 'pip' cards which show a number of symbols rather than having full illustrations, is that the Minors are interpreted based on the symbolism of number and suit. This means that when I drew the Six of Cups for the future, I saw it as referring to the aura and the six colours of the artist's spectrum, Cups symbolising colours of a psychic creed - I found so much significance in this! Yet, had I posted this reading on the forum for other's comments, no doubt there would have been those who would have spoken about 'childhood memories' based on the RW imagery that they may be used to, or spoke of Crowley's 'pleasure'. Yet these interpretations would not have been as significant as the clear message I was being given to move onto introducing colour to my drawings, and begin also depicting people's auras, which spoke to me loud and clear.
I did consider posting this reading and asking only people to interpret as they would with their own 'pip' decks, Waite and Crowley out of the way.
Having said that, I don't think that there is anything wrong with the alternate perspective of others. If another person was to look at these cards who is accustomed to RW imagery, then they could offer me a perspective I may not have considered, a person accustomed to as Thoth perspective might offer me yet another.
I am however, coming to the view, after 11 years of reading, that whereas in the beginning, fully illustrated Minors and keywords may be a great help, but when more experienced they narrow down our scope for interpretation, and dazzle us into overlooking significant and important things, based only in the symbolism of number and suit. I do often wonder sometimes, what is the point of having numbered suits at all if we are only going to base our interpretations on pictures. We may as well only use oracle decks.
I often, regardless of the deck that I am using, just pay attention to symbolism of number and suit. This means that what the 3 of Coins means to me in one deck, it means the same to me in any deck. So when a person posts a reading asking for insights on intepretation, it doesn't matter to me what deck it is, because I read all decks the same anyway - otherwise, I reiterate, what is the point of numbered suits?
I do feel that illustration is important, as it gives each deck a distinct character, a personality and brings it to life - it's fun! I have nothing against illustrated Minors at all, I have loads of them - I just hope I don't sound like I have anything against illustrious decks - I don't! I do however, have an important point to make. If we were to teach beginners to Tarot, to think about the symbolism of number and symbolism of suit, and then to study each card as a composite symbol of both of these elements, then I feel that we would find that our perceptions of each card would be more similar, and there would not be as much variation in intepretative value upon each card.
xXx