It won't be a lot, mostly Cloud and Leon (Squall) moments. There's one in the demo, even, if I recall!

Kingdom Hearts gives a little more insight into Squall, and since Levi is actually older than his counterpart I have to consider Leon's attitude a bit more when doing character dialogue. Levi's a little more experienced than Squall, though he's a bit of an...well, you'll know when the games released.

....It's the same person, that's like comparing FF7 Cloud with AC Cloud, y'know. Well at least I like to think so, it might be AU but it's the one and only whimper we've heard from the FF8 universe since the game was released. Besides Dissidia.
Keep in mind; Levi's still a teen, though only just. If any of these bunch of crazy-ass people survive you can bet he'll grow his hair long and cut off his sleeves.
That's if I don't decide to blow the whole world up. Still deciding.

I can tell you right now I'm nothing like I was seven years ago, either. He's more mature than his angsty, temperamental self. That's why I have to; not want to, understand this, have to; take into consideration every occurance of the characters and derive from the best of my ability a suitable construction of their personalities. Levi is older than his counterpart and has experienced horrors that Squall never came across. I have to reflect this. Levi is also a different person. I have undertaken this game as a challenge; I want you to play Cosplay Crisis and even though the characters catch the C-Virus and are barely distinguishable from their counterparts appearance-wise, I want players to come away from the game and not say 'Cloud did this, this, this' I want them to say 'Kumo did this, this this'. These characters have similar pasts, similar presents, and possibly, similar futures, but they are different in their own ways, whether they be subtle or obvious. I have striven to create something that is, not only a fan-game, but a set of characters distinguishable from their counterparts. It is the essence, the soul, the entire purpose of Cosplay Crisis. To show that even though these people are having their identities robbed from them, they are going to fight to prove they are also their own selves.
That is why I have to create merged versions of people, with my own additions, so they become more than Squall Leonhart, SeeD, or Cloud Strife, Ex-SOLDIER. That is why I must reference everything available to me, cut out what I deem unnecessary, add what I need to create what I want, to create the character of Levi Raionomoi or Kumo Atsureki.

(I am so sorry for my walls of text. I can't help myself, really!)