It takes a while to establish a character. Richard Boone once told me he didn't really get the character in 'Have Gun - Will Travel' until the 16th show. You just plant a seed, water it, let the sun shine on it, and hope it blooms.
You cannot simplify human intelligence, emotion, and growth. To watch the frills and furbelows of a human psyche is fascinating.
You can do bad parts in good pictures or good parts in bad pictures and maybe get a little personal satisfaction. But the key to it all is good parts in good pictures.
Most shows get dumped by the networks, do a couple of years in syndication, then they're in the vault. 'Mission: Impossible' has never been off the screen.