Yeah. There's one change I'd like to make, though.
[spoiler]I think that the final book could've been a LITTLE more epic. I also didn't like V1's surrender. He didn't seem as crazy and impulsive as his character usually was.
INSTEAD...
Let's say that Jake hasn't flushed the Pool into space yet - they entered from a different direction. Also, let's say that there are some escape pods near the Pool. (Do you see where I'm going with this?) The Animorphs become pretty distracted with Rachel's death and all, and V decides that the Blade Ship is screwed. At the bare minimum, this coward wants to survive. He attempts to get to the Pool's pods while the characters are getting the feels. Ax leaves them to it and chases the visser to the Pool. Marco gets an idea and follows them. Cue epic Andalite fight scene. Eventually, after a large dose of awesome, V1 is knocked into the Yeerk Pool.
V1 is now in the perfect spot for what Marco needed.
He presses a button.
A shieldy airlock thing closes over the Pool.
V1 and over 17,000 other Yeerks are flushed into space.
I know... this removes the trial scene. The Animorphs'll be partially reunited in some other way.[/spoiler]