How would the Animorphs even be a threat if they didn't have
Cassie, and by extension her almost unlimited access to an entire zoo, plus whatever North American Animal Ex Machina was needed by the ghostwriters that month? I guess I just don't remember Megamorphs #4 because I have no recollection what all of this
Cassie being a plant from the jump stuff is about.
So far, I feel like if anything, thus far, book 6 revealed that Jake is the weak link of the team. Tobias helps the team plan a brutal and flawless series of traps for Temrash, completely without Jake's dithering "leadership." This is in book 6 so as far as I can tell, has nothing to do with the Ellimist stuff, more of just a logistical "why is this guy the leader" question. His knowledge coupled with the supposedly elite Yeerk piloting him were unable to even think of a plan of escape involving the eight or so diverse morphs he has...
Also, for added confusion sake, and since he's already gone ahead and acquired them, shouldn't they all acquire Ax just so they can feign an Andalite morph in times of dire emergency? Who cares if they're all the same teen centaur, better to condescendingly explain to visser three the totally new "Retratnil technique," which lets Andalites shift between morphs without returning to the original body, (

) you probably haven't heard of it,
Alloran, you've been away from your homeland for so long; than to totally blow your cover the first time you run up on a time limit... Also they seem like legitimately strong battle morphs on their own.
Do we know if Ax acquired anything before the shark when he was in the ship? Like any Andalite homeworld shit.