During the late 1990s, Davies lobbied the BBC to revive the show from its hiatus and reached the discussion stages in late 1998 and early 2002.[80] His proposals would update the show to be better suited for a 21st-century audience: the series would be recorded on film instead of videotape; the length of each episode would double from twenty-five minutes to fifty; episodes would primarily take place on Earth, in the style of the Third Doctor (Jon Pertwee) UNIT episodes; and Davies would remove "excess baggage" from the mythology such as Gallifrey and the Time Lords.
In August 2003, the BBC had resolved the legal confusion over production rights which had surfaced as a result of the jointly produced Universal Studios–BBC–20th Century Fox 1996 Doctor Who film
The fifteen-page pitch outlined a Doctor who was "your best friend; someone you want to be with all the time", the 19-year-old Rose Tyler (Billie Piper) as a "perfect match" for the new Doctor, avoidance of the 40-year back story "except for the good bits", the retention of the TARDIS, sonic screwdriver, and Daleks, removal of the Time Lords, and a greater focus on humanity.
The first new series of Doctor Who featured eight scripts by Davies; the remainder were allocated to experienced dramatists and writers for the show's ancillary releases
Davies also approached his old friend Paul Abbott and Harry Potter author J. K. Rowling to write for the series; both declined due to existing commitments.
The production team was also tasked with finding a suitable actor for the role of the Doctor. Most notably, they approached film actor Hugh Grant and comedian Rowan Atkinson for the role. By the time Young suggested The Second Coming and Our Friends in the North actor Christopher Eccleston to Davies
Eccleston created his own characteristics of his rendition of the Doctor based on Davies' life, most notably, his catchphrase "Fantastic!":
[The central message of the show is] seize life, it's brief, enjoy it. The Doctor is always saying "isn't it fantastic?", which is one of Russell's favourite words. "Look at that blue alien, isn't it fantastic? Oh, it's trying to kill me. Never mind, let's solve it."
— Christopher Eccleston
source:
https://en.m.wikipedia.org/wiki/Russell_T_Davies