Improve the cohesiveness in the following text:
Roddenberry sought to get a different star. Roddenberry offered the role to Martin Landau, but he did not want to play the same character on a weekly basis and found the character's lack of emotions limiting.
Seeking to get a different star, Roddenberry offered the role to Martin Landau, but he did not want to play the same character on a weekly basis and found the character's lack of emotions limiting.