I practice a small gungfu system, preserved within a family. However, we practice a long form of taijiquan that is referred to as 108 Yang Cheng Fu (slightly different pronounciation in Hakka). It has been pointed out by one or two people that its structure is similar, although not exactly the same as the modern 88 form.
I am wondering whether the PRC used Yang Cheng Fu's form as the blue-print for the 88? The difficulty lies in the fact that Taijiquan was not part of our gungfu in its earliest time. And our sigung died in 1992, without ever discussing the origin of our long form.
I think the new forms, such as the 24, 48 and 88 have alot to offer. Particularly for us, as we simply project our tradition onto the new movements, to find old meanings.