See this discussion over at Dharma Wheel (Mahayana):http://www.dharmawheel.net/viewtopic.ph ... 518#p46498
The posts after my questions, seem to appear that the Mahayanists are referring to the Buddha's life as if it were a show or movie that had to be played out, that he was enlightened eons ago, etc.
I sometimes wonder how many Mahayanists know about the Trikaya concept. My feeling has been that most Buddhists (at least the convert type) see the Buddha as a historical person. If they understood the Trikaya concept more, they might find the Theravada view more appealing, without the deification of the Buddha. (However, if they know and understand the concept and are okay with that, then no problem, if that inspires them.)