Nuanced questions about True Polymorph and spellcasting:
I have a wizard who has a simulacrum. Wizard TP's the sim into an adult bronze dragon, which can then Change Shape into a humanoid or beast of its CR or below. TP says the sim retains personality and alignment, so it still holds loyalty to me. I have it transform into, say, an Evoker (CR 9 humanoid wizard with spellcasting prepared).
If my dragon-sim changes shape into said Evoker, which has no default race, am I able to choose the race of the Evoker and grant it those racial traits (ex. Halfling Luck, Warforged Resilience, etc.)?