Scouts in SFB had special scout functions, they could lend EM to other ships, take over drone control etc. none of which we have in SFC. Scouts also had better sensors for tactical intelligence (which we do have in SFC to a limited automated capacity).
An idea for making Scouts useful in SFC arose awhile back, where a single Scout vessel was to be employed to 'scout' out enemy terrain. Scouts are not really combat capable, but with their advanced sensors and scanners would detect enemy ships before being detected. One possible way to emply this in game, was to make a loan scout vessel exempt to the deepstrike rule. Since a scout is not likely to win very many engagements anyway (even against AI), essentially the scouting player could only really move around the board with impunity, but mostly only by losing missions (certainly deepstriking a base or planet would be impossible). The disengagement rule should still apply, however, since once the Scout has been discovered and its warp signiture identified and tracked by the enemy, it has lost its element of secrecy.