Only thing I can think of would be to maybe go for the outliving your opponent plan (Cathedrals build into this too as they then prevent the Bequeathing action) whilst also being able to build towers regularly?
Dear Geek: Please insert the wittiest comment you can think of in this text pop-up. Then times it by seven.
The Coat of Arms of Clan Montgomery - Scotland. Yes, that's a woman with the head of a savage in her hand, and an anchor. No clue what it means, but it's cool.
To be fair, maxing out on *any* card in the game is pretty rare unless you are building a deck around that card.
A 6 Prince deck has many uses - you will pretty much never have to worry about bequeathing, meaning you will be going for a long-game and hopefully forcing your opponent's line to die out. This would tend toward a castle-type deck to lengthen the game and spare Princes could be used for Towers.
I *could* see it as part of a strategy, but I think that as a player learns the flow of this game, they are very unlikely to use 6 of anything - as a balanced deck with a specific plan for victory baked into it will more often than not win against an unbalanced deck that has only one or two tricks.