Yea, it would be a refreshing change to be surprised by a Regeneration.
I watched Classic Who on PBS, before this new fangled Internet thing, and didn't know a thing about what was coming in the next episode (Or even when new episodes would stop). So, every episode (That was new to me) was a surprise. I remember the 3 Doctors, The 5 Doctors and The 2 Doctors all were a surprise to be multi-Doctor Specials as were all the Regenerations). Even having seen the first Tom Baker, Pertwee's Rgeneration came as a surprise, since Pertwee hadn't been shown for the first time until after Baker had aired several times, and Davison had aired. Likewise, having seen Pertwee's first, Troughton's Regeneration came as a Surprise.
One Day I hope to be the Man my Cat thinks I am
Where are we going? And why are we in this Handbasket?