The way have establish the pre novice in SPA is basically for the plane being flown, being out of era. IMO, it should be a CD option to have the pre Novice class, and you could award cheap certificates ( about like we do with trophies anyway), cause the pic on a piece of paper in a frame does a lot for folks that's never gotten one.
As easy as the Novice is in BPA already, I see no reason to change the maneuvers at all. It would only allow the fellow with the Sequence or the World Models super sportster to fly in a contest and not be competing with folks flying the vintage planes. Honestly, the little Sequence could about blow away some of our older vintage planes, depending on the stick moves.
I flew one in the Masters class at the Tangerines two or three years ago because my 2 meter was down for repair, and most of the 7 Master pilots we're laughing when the contest started, but they were not laughing when it was over all about the sticks anyway, JMO.
CD option would be my choice, and not to add the 5th class.

JMO,