I honestly don't know. I was always pretty resentful that McGann hadn't been asked to return to the title role and RTD always said "There was no point bringing him back for a regeneration as it will confuse the new viewers", or something along those lines. Fair enough. But he could have had a couple of series for people to get to know him. Plus, that would confirm him taking part in the War, which would very much suit me.
However, saying that, it was nice to start a fresh and we may not have got the wonderful Doctors in Eccleston, Tennant and Smith... Also, RTD may have not displayed the incarnation as the character he later became, instead opting for a continuation from the TV movie.