Which extra roles suited the English Electric Canberra

Was the English Electric Canberra suitable for all-weather interception, airborne early warning, or carrier operations?

Not for interception or carrier use; an AEW adaptation was possible, though the aircraft was not designed for it.

The English Electric Canberra was poorly suited to all-weather interception or carrier operations. An airborne-early-warning conversion was more technically plausible, although the airframe was not designed around that role. Such a modification might have been made to work. That is different from choosing a platform whose basic layout naturally meets the mission.