I have to be honest with regards to the Chapters system in Dragon Quest IV - I didn't really care for it.
I mean, in RPGs I generally don't feel like things "get going" until I have my full party of people - at which point I spend a whole bunch of time grinding and such. Grinding before I have my full party of people always feels like a waste, and that I just want to move things along until I have my full party of people.
With Dragon Quest IV, it's like, you get started, get going, advance your way up... And then go back to the beginning of another group. And do that repeated over. And I just don't feel like the game actually gets "started" until you're done with all that stuff and everyone comes together.
I mean, I get why it's a neat idea - it really gives you a sense of where all your party members are coming from, and their backstories and all of that, much more than them just running into you at some point and just being like "Oh, hey, this is what I've been up to." But, it just makes the game feel really, really slow and annoying to get started.