>>211506059
A huge opportunity was missed not making the Toymaker an alternate rival to the Doctor, who contrasts with him by being a higher-level entity who represents what would had happen to the Time Lords if they shed their corporeal forms the way Rassilon was trying to and the way the Q in Star Trek did.
He could solve all the Doctor's problems forever or cause him never-ending problems, but is invested in the paradox of someone having all the tools to get to his level yet refusing to, even as it means suffering from hardship and severely reduced agency, in a being who purports to treasure their freedom and the freedom of all other sentient.