If they want to make the game another game with the story divided into more than one character how about not doing first half one and the second half another or even dividing it into equivalent parts for all playable characters, nor would I like it to go with one character one chapter the other the next, but rather I'd hope they'd get creative with the chapter distribution.
Let's say for example that the playable character are going to be Trish, Nero and Lady. Rather than go T, N, L, and again T, N, L til the end I would have it go T, N, L, N, N, T, L, T, T, T, N, L, N, L and so on in less organized manner more for story than uniformity.