Suggestion:
Change the 'agility level shortcuts' requirement to be a 'revenant kill count' requirement. (For example, a player would have to have a total of XXX Revenant KC to use the shortcut.) In OSRS, the shortcuts allowed the PVM'ers to have a chance because 75/89 agility is a VERY high OSRS stat.
Future Suggestion (If Slayer Comes):
Fill the full revenant cave with slayer monsters. Pros: Great location for Wilderness Slayer. Allows players to make use of the other 80% of the cave.
If Wilderness Slayer comes, make the agility shortcuts mentioned above to be a Slayer Requirement.