Smokie,
Commuting - you must be able to leave home within 30 mins of callout and then be able to report in the office within a further 1 1/2 hrs assuming normal traffic.
Bases for A300 - Man, Lgw there are a few positions left at Ltn but are being phased out.
Stopovers for A300 - Bah and occasional adhoc/A330 rescue flt
BALPA - Chances of Scale C being linked to Scale A, very slim primarily because pilots are accepting Scale C now in its present format. The MD has stated that market forces will drive Scale C, as long as pilots want to join on inferior terms to those already established for the workforce then that is exactly what he is going to get!
There is a thread somewhere detailing some of the major differences between the 2 scales.