There's a jutsu that just makes you as big as the Mazo already so I don't see why not. Your transformation would likely be lacking without knowning the mazo inside and out and you wouldn't just innately know its abilities. It's like a Druid in DND. You might be able to turn into a bear and have all the tools needed to catch a salmon out of a river but as a person you have no knowledge or experience to put those tools to work. you'd probably suck at bear fishing. There also seems to be some sort of half-assed attempt at conservation of mass.
"An advanced form of the Transformation Technique, the Combination Transformation transforms two users into one being and also gains the physical abilities of the transformed entity."
So you could do that and be physically as big and strong as the Mazo but have none of its jutsu.
So like Naruto needed something as big as boss toad to turn into the nine tails, he wouldn't have just been able to have his clone turn into it. But then Kiba and Akamaru can combine into a much bigger creature than either of them, and the Sound 4 can combine into just one person for the purpose of disguise. So there seems to be a bit of leeway to increase or decrease size.
As for the Hozuki thing that actually makes a lot of sense and would explain why the jutsu maintains itself even with Suigetsu passes out.
I see what you mean, but simply because a jutsu shares a similar nature, doesn't mean the degree is essentially the same. A Rasengan will never be an actual Tailed Beast Bomb no matter how much chakra one puts into it. It can be given devastating amounts of chakra, enough to wipe out a village and you can even throw it, but it doesn't turn it into TBB even though Rasengan was in essence attempting to copy it. Knowing Transformation Technique, doesn't give you Substitute Technique though they are in essence, a transformation. Simply using Transformation to turn into Suigetsu, wouldn't give you Hydrification. Otherwise, Orochimaru wasted years of his life trying to experiment on people and take over their bodies when he could simply transform into Kimimaro or Sasuke and gain their innate abilities.
I think when the wiki says it gives them the physical abilities of the transformed entity, its more of "if you turn into a bird you can fly" not "if you turn into Kurama, you gain the physical strength to flatten mountains and raise tsunamis by a simple swipe of your tail". Looking at the context of when Combination Transformation was used, Gamabunta only wanted to be something with fangs and claws to dig into the enemy (as he had just made a successful cut with his sword and lost it shortly during battle), it gave him things like that.
Just like it doesn't make sense to me that if a top notch fit, Jonin transforms into a little old lady, they lose the strength they once had and if they transform into Tsunade, they suddenly gain strength they never did, otherwise its not Transformation Technique, its Substitute Technique. Just like if you turn as big and strong as the Gedo Mazo, your using Multi-Size Jutsu, not your standard Transformation Technique, or as big and strong as the Mazo and actually being an duplicate of the Mazo, you're using Substitute Technique, not either Multi-Size or Transformation.
Seriously? SO can I transform myself into the Gedo Mazo and behave just like it?
That is like...why do I need any other jutsu but this transformation one?
Question...did Hozuki turn to goo because of chakra absorption, or because he was then too taxed to reform into his physical body after being used up so badly in the fight...because he had chakra drain and then could not reverse the jutsu? I have to question him not being able to be 'physical' without the use of jutsu to sustain him but rather just needing chakra in quantities enough to make a phase change. Meaning, that had he went through chakra absorption while physical he would have just been physical, not turned to goo.
Its possible low chakra is a factor, but I doubt it as far as we know Suigetsu only turned to goo because the force of the Tailed Beast Ball was too much to handle and rendered him unconscious. His Eboshi jutsu didn't seem like it was straining on him chakra wise or anything, he didn't do much during the fight other than get hit. Though that kinda brings into question the whole "impossible to receive physical damage" aspect of the jutsu, it still seems to be maintained without conscious effort as well. When Kisame absorbed his chakra he was splattered when hit by Samehada and simply reformed, realizing only when Kisame mentioned it that his chakra was absorbed.
So, I guess absorbing the chakra from them might just goopify them if that's the case. It's a tricky situation, but I don't think that they'd get sucked up >_>
Theres no evidence of them "goopifying" when their chakra is absorbed, just when hit with enough force to render them unconscious (which makes no sense how thats possible seeing the water form should stop physical attacks from hurting you). Again, why can't they be? Far more drastic things have happened. Bocc brought up when Naruto transformed into the Rasen-Shuriken and didn't get absorbed as evidence that the Hozuki would just solidify, but I argued above that its a whole different tier of jutsu we're talking about and can't compare them other than just calling them a type of transformation.
What do you guys think? Did Naruto 100% turn into a Rasen-Shuriken and Preta Path's Absorption merely ended the transformation state?