At this stage the answer to your question is no. British Airways CitiExpress will be run as an entirely separate company, and there are no plans for the seniority list within BACE to allow direct access to BA mainline. However, it has already started happening with CityFlyer Express, so in 4-5 years, you never know.
As regards why it will be a positive move, we now will have the financial backing of BA, and as we operate smaller aircraft than BA mainline or BA Regional, we can make certain routes profitable which our bigger brothers can't. Generally the feeling within the new company is quite optimistic already.
Hope that answers your question.
(edited for bad spelling! my English teacher wouldn't have been impressed!!!)
[ 09 August 2001: Message edited by: rhythm method ]