With the proviso that who did what is not necessarily correctly known...
As useful as the transporter was in speeding up the scene transitions, in the long run, it caused two problems. The double talk justifying the non-use of the transporter to resolve physical jeopardy was more or less encoded into all the Trek shows' DNA. Also, that level of tech didn't really fit, if you paid attention, leaving a permanent jarring element in the setting, constantly trying suspension of disbelief.
The miniskirts were the wrong kind of sex appeal. In the long run, the interest of the characters is what creates any real eroticism. Miniskirts (and their successors, the catsuits,) are merely superficial, sexy enough to offend the prudes without engaging any real emotions or awareness.