The Leviathan fight was a mess indeed. That has little to do with this being XV and not Versus, though (note that I didn't mention the Nomura vs Tabata eternal battle. I think time was a bigger factor than one could think for this battle to be like this, although not the only one, as it wasn't very well planned or designed).
However, I would be REALLY surprised if we find out that, in Versus, we were allowed to explore Insomnia in a significant enough manner, beyond the initial setpiece with battles and shit going on and, maybe, the ending. Now though, that would have been better, much better, especially as I didn't find the beginning of XV to be very good. Also, mostly because of how little connection I had in regards to Insomnia and its people. I didn't care about them; I only cared about the bros and little else.
Also, you should try to stick to one post and edit it. Constantly seeing two or three posts in a row by the same person is annoying, especially when they're unfiltered rants.
dunno about those leaks, but if they are true, what i imagined from versus is way better than that.
I haven't read the latest one, but the one that talked about how Versus would have focused on hallucinations and
that twist and that I actually liked quite a bit.
But, of course, it's Nomura and Nojima. If there is a way to fuck a concept up, don't worry, as they're able to find it.