What If? Features in Pilot Episodes Never Changed

In most Trek series created in the 20th century, the pilot episodes often have obvious differences from the rest of the series. From a character's make-up to their voice to their actions, change is inevitable. Even the music or look of the show itself can alter from the very beginning. Most of the times, these changes are seen as improvements. But what if they never changed?

The trio look at how first episodes of shows, even from current Trek series, were different in tone, style, and specifics from what came later. How different would the shows be if those improvements were never made?