3. Is Fisto's fist interchangeable with the arm attachments of Hurricane Hordak, Roboto, Trap Jaw and Horde Prime?

While we have seen fan requests for this, Fisto was not designed with a removable fist and it is too late to make this change at this time.
How stupid. Roboto, Trap Jaw, and Hurricane Hordak all have interchangeable parts. Clawful's claw was removable.

Why not Fisto? A five year old could have anticipated the desire for that.

The figure is still awesome, one of the best so far it looks like, but that was so easy to do.

He's still almost perfect, but that would have been very neat to have.