stevec
How does Cubase handle the attack portion when it picks up a note mid-stream?
I strongly suspect the answer is "not very well", which is why I would still opt for freezing/recording tracks with long notes as soon as possible in the composition process. There's no way re-triggering a note in the middle of its duration is going to sound right, except in the specific case that it's playing a low-volume pad with a soft attack and timbre and amplitude that do not evolve significantly over time.
I'm guessing the Bakers have looked into it, and decided it's not worth the programming effort given that it will sound wrong more often than right, and will probably generate more support calls and bug reports from users who don't understand the function's limitations, and why it so often gives bad results.