I always felt the 33/0 looked wrong to my eyes, which is why I never bought one. I did convert a 33/1 into a 33/0. Having looked at the revised one in the cabinet at Warley it is much improved and I shall be buying some.
Hopefully we will see Heljan revisit some of the their other models that suffered from shape issues such as the 47 and 86 and the O gauge Mk 1s.