I agree more contesteds worth killing would encourage open world pvp but those contesteds should not be dropping tokens. Thye should be dropping gear people want/or would use based on the effort of the mob killed. Maybe an updated overland version of Gwartha's Hoop or something with other desirable procs and/or a new semi rare- very rare pvp adornment that adds a pvp desirable proc.
Scouts are always screaming for taunt immunty so maybe something that procs a 3-5 sec taunt immunity 1x/ min.
Tanks are partial to wards/heals etc.
Less tokens for pve effort though imo.