I think people, both defenders and critics of Ice Climbers, need to understand something very important about the situation:
Sakurai didn't scrap the Icies due to malice or spite.
He had to scrap them because they presented a technical impossibility.
Sakurai said he tried everything possible to get them to work, but it wasn't feasible. He even tried to change the character's frame rate and switched off gravity.
That we know of, nothing short of changing the very nature of the character will get them to work in either version. The 3DS can't handle eight characters on-screen at a time, the Wii U can't handle 16. In order to be technically possible, the Icies would have to either:
- Be a single entity ("SoPo")
- Have the AI on the partner entity compromised massively
- Have the frame rate on the partner entity compromised massively
- Have both entities share animations without a distinctive AI
Sakurai evidently isn't happy with compromising the integrity of a veteran character, because then it will serve to undermine the very thing that the Icies were chosen for in the first place. He isn't going to have the character be playable in one version and not the other, because not only would it be unfair to fans of Smash 3DS, it'd be financial suicide, since Smash 3DS is massively popular in Japan compared to Smash Wii U. It's impossible either way, since Smash Wii U still can't handle the character. Whether you disagree with that or not is irrelevant, because it just isn't going to happen.
We have to accept that. For better or for worse, that's that.