Re: How do you account for the drastic design change between TOS and T
The uniform changes were recommended by Robert Wise. The makeup changes to the Klingons (and Andorians) were due to new capabilities of then-modern no-bake latexes, with Roddenberry encouraging Fed Phillips to build on a crested alien design from (either) the "Planet Earth" or "Genesis II" pilots.
They can in the era of "spray 'n' wear clothing", a concept conceived for TMP (eg. Ilia's leisure robe materialises around the Ilia Probe).
I think it was due to Rodenberry wanting to change the look.
The uniform changes were recommended by Robert Wise. The makeup changes to the Klingons (and Andorians) were due to new capabilities of then-modern no-bake latexes, with Roddenberry encouraging Fed Phillips to build on a crested alien design from (either) the "Planet Earth" or "Genesis II" pilots.
I mean realistically a military organization simply wouldn't drastically change their uniforms 3 times within 20 years.
They can in the era of "spray 'n' wear clothing", a concept conceived for TMP (eg. Ilia's leisure robe materialises around the Ilia Probe).