It most likely will be the same kyutu, because a purely canon version of tenseigan would be simply impossible. Now its more a question of what the differences from canon version on SL would be.
As for Kage's points, if you have the full set of chakras, its ten balls regardless, Madara/Obito just formed one staff and kept nine in reserve, Naruto made two and kept eight.
Also I'm quite well aware of rikudou stuff, thank you very much, that's why I mentioned it, and am also wondering whats the point you're trying to make o_O on SL, uchiha + senju can mix chakras to go rinnegan thus rikudou? Well okay. Rinne people can't get sage mode so they can't do rikudou sage? Okay. Sage moders can mix senjutsu with it to get rikudou sage? Uhh no. Following your thing up so far, even if you were uchiha + senju with sage stead of rinne, you'd be just a normal sage, since due to inability to mix the chakras to get rinne thus get rikudou you'd also have nothing to get the rikudou sage from.
I also made a small typo, this; "considering tenseigan appears to be just a lookalike"; should have balls in there too. If going by info gotten so far, the tenseigan balls are just swirly green balls made of energy from now dead ootsutsukis. Might be bloody powerful but some core differences to legit balls would still apply I daresay.
Moving on, so its from data book, okay, I'm cool with that, but it doesn't change the fact its still hella vague, and is assumably going to make much more sense after one has seen it in the movie itself. I for one haven't, haven't been able to find it anywhere yet.
Moving on, of course I know people can't do moon trips on SL, that's why I specifically pointed it out so people can see how dorky it'd be -__-' as for the instant eye implantation, I can't comment on Toneri cause as aforementioned haven't seen movie yet, but other than him I've never seen anyone do it except Madara, who had Hashi's healing power at that point. For him it really would be as simple as just stick it in, the nerves would reattach themselves after that. For Sasuke it took surgery and days of recuperating, and though it wasn't shown how Obito did it we can assume it either was same as Sasuke, or slightly quicker due to possible slightly hastened healing which I'm recall half zetsuness granted.
Moving on, I beg to differ on the 'it just works cause lolmagic and chakra'. Or well sure, if you want to pull that then be my guest, but I prefer to at least try have some logic to things, which is why I gave the kaiten-esque example of how it could possibly work on SL. Mangekyo? Tsuku and koto are illusions, amaterasu makes special flames outta your chakra and flings them out, susanoo lets the user spew out the huge chakra mass and form it to the giant, might even be the eyes that are the control tool though considering madara made one while eyeless I suspect the eyes are just the activator, similar to how a huge trauma is activator to mangekyo.
Kamui is the only slight question mark since only one instance of it was shown in the series, unlike SL. On-site each have their own pocket dimension for it, as silly as that is, but at least in canon I suspect that if someone else than Obito/Kakashi had kamui then ultimately they'd have been connected to the same dimension. It would make sense for a couple of reasons, starting from heritage.
Rinne-sharingan can warp user to many dimensions. Rinnegan is descended from it, and can access 'limbo' which is far enough removed to be invisible to naked eye, but close enough for your clones there to interact with this one still. Sasuke's teleport tech might have something to do with this still. Sharingan in turn is descended from rinnegan, so it could be kamui is just an entire dimension of its own, even further removed than limbo so nothing in there can interact with this one, but still not completely separated. After all, if it was completely separate and just a pocket dimension, if you swirled yourself in at some spot then wouldn't it make sense you'd come out at exact same spot. Instead, Obito could come out wherever he pleased, like the two were overlapping each other.
A bit ranty, but see? Logic. That's where my tenseigan chakra mode idea was from, expelling chakra from every tenketsu akin to kaiten, and forming the cloak out of it. As for the 'whatever eye magic' mention, that was just a generalized meaning for whatever way -if any- ends up being the way to unlock tenseigan on-site.
Lastly, preta business. The balls take nature energy to form, so why on earth would it suddenly disappear after they're made? They wouldn't, so, suck up a ball via preta path, and you suck up all its made of, nature energy included. Same thing happened when Nagato's preta caught Naruto and sucked up his senjutsu, nature energy came along with it, and bam petrified. As for why the balls can't negate senjutsu even at onmyodo level, pure guess here, but by common sense it'd be because senjutsu has nature energy like the balls do, so it'd be the same as trying to negate itself, in other words impossible, so instead of the senjutsu getting pulverized it produces a clash instead. Kind of like the guns against those ghosts in the crappy final fantasy movie.