Just a few thoughts that came to me about the Neo-Kuno yesterday and which I've tried my hardest to remember. Jupiah, if you're still scanning this, can you please let me know whether or not you still want to be part of this?
Anyway, first up, here are the name-links again so they're a bit easier to find:
http://www.issendai.com/rpgs/japanese-boys-names.shtml
http://www.issendai.com/rpgs/japanese-girls-names.shtml
I can't think of a name for him off the top of my head, but I think that, given Kuno's samurai obsession, the "maru" suffix would probably be incorporated, what with it being a popular suffix for samurai.
I think a pair of defining traits of Neo-Kuno would probably be his less-than-stellar relationship with his father, both a reflection of Kuno's own relationship with *his* dad (though they don't treat each other the way the Principal did Tatewaki, naturally) and something of a homage to the "culture clash" of Past and Future- Tatewaki is representative of the past and tradition, while "Maru" is representative of the future and the new way.
It was this idea that inspired the various other details I came up with, which currently consist of the following...
Appearance
Now, I admit I'm not an anime expert, but isn't it common -especially in sci-fi anime- for a rich/noble kid to be portrayed as (semi)bishonen? Given that, and the fact the rootseries for this is a comedy, the fact Kuno & Mariko aren't exactly bad-looking and, finally, the fact that Maru is somewhat less than fond of exercising, I was thinking that a somewhat feminine build might suit him well.
Not only is it a good way to represent both his good looks, inherited from his folks, and a way to portray his lack of physical development without making him a creepy nerd-figure like Gosunkugi, it's also a 'key' for Maru and Kuno to clash over. With his obsession with his image as a "noble warrior", Kuno is doubtlessly not going to be happy with a boy who looks so... well... "anti-fighter". I can see him begging/bugging Maru to bulk up, to get some dirt on himself, or better yet earn some battles scars- just stop looking so much like a dainty who'd faint at the first sight of blood, dammit!
Weapons/Fighting Style
Kuno always carries at least one sword on him- it's part of his samurai obsession and the basis of his fighting style. To properly honour him, I'm thinking Maru should also be a weapon user- however, to fit him better, I was thinking to make him a gunslinger. This plays up the "past/future clash" aspect- I admit to not being an expert historian, but wasn't it the creation and proliferation of firearms that led to the downfall of knights in the European countries? And didn't the samurai likewise fall in power when the peasantry gained the power to, after a couple of weeks, kill a warrior-lord who had spent decades honing their skills before said warrior had even gotten close enough to strike? Even if it doesn't have that resonance with Japanese history, the fact his son is dedicated to a "peasant's weapon" is sure to be another source of tension between them. Besides which, having a fighter dedicated to an entirely ranged style is a change from the usual norms of Ranma 1/2.
In keeping with Maru's futuristic theme, and my ideas on his own intelligence (see below), I was thinking that when the series begins Maru would carry a futuristic "stunner pistol". Vaguely inspired by Falco's blaster in Super Smash Bros, this relatively slow-firing sidearm produces "bolts" of energy that can damage inanimate materials, but whose effect on living organisms is a jolt of pain and minor muscular paralysis- essentially the same effect as a hard slug from a martial artist. As Maru progresses through the story, he upgrades his tactics and arsenal in order to keep up with the growing skill and prowess of the other martial artists- I was thinking that, eventually, he'd come up with the idea of a prototype form of exo-armour (a 'missing link' between a full-grown mecha and a suit of power armour) mounting energy weapons.
Intelligence
Kuno isn't *precisely* stupid, but his immense ego and somewhat twisted way of looking at the world means he tends to come off as such -perhaps more so in the anime, though this is one time where it's hard to say. As such, I was thinking that it might be a good twist to make Maru definately intelligent, perhaps even a prodigy/genius- he might get the parts from KunoTech Industries, but he's the one who comes up with the designs and puts them together. It also helps with the antipathy between father and son; to the progressive and, well, stable Maru, Kuno comes off as just as big a flake as he does to Ranma (or any viewer/reader).