Re: “all other splits moving” I like the way they did it personally. I was similarly frustrated at first but the more I learned how it was set up it became much easier. Event splits just affect which portion of an existing file from the pool (bend info included) you are viewing. If you think of it in a linear sense without bouncing separate sections (“I split this thing, it should not be part of this thing anymore”), OK, you can get yourself confused. But it was clearly designed to work in conjunction with their other features. Such as Snap and Bouncing.
As for bend markers being added at every split, I think this would get messy and make group edits even messier. I use audio bend a lot though and like the current system so maybe I’m biased.
