Yes, stickerless cubes should be allowed in competition
No, they should not
Do you seriously want to use that in a competition? Whether it's legal or not.
With the guhong you can see the color when the cube is directly at 90 degrees because of how the cube is put together but this is only when a layer is turned. So yes, there is a slight advantage but no one holds the cube at exactly 90 degrees for more then a few milliseconds.
That wasn't really all that clear, probably. But yea.
That cube is so illegal. I can't believe I didn't make the connection earlier when I realized that it's 3 parts for each corner + 2 parts for an edge. And you can't see that "left" face "normally" but you can here due to the way the cubies are put together. I'm not sure how much of an advantage that would hold in speedcubing, especially the fast cubers since their TPS is so high.
I honestly don't see this being allowed in competition though, since that is an obvious amount visible.
I don't read the regulations much, so please, no ass-talking please :3
Would this color version of the GuHong effect these regulations?
3h) No modifications are allowed that enhance the basic concept of a puzzle. Some examples of enhancing the basic concept are: new moves are possible, normal moves are impossible, more pieces are visible, colours on the backside of the puzzle are visible, moves are done automatically, more or other solved states.
3j) Puzzles must be clean and must not have any markings, elevated pieces, damages, or other differences that distinguish one piece from a similar piece.