I'm not a fan of this to be honest, newer players camp this boss to begin with to get the dfs/somewhat nice money maker and making it a pvp zone would make newer players scared of going there and making it harder for those to being with.
However on the matter of pvp, the revs cave used to be high zone for pvp and risky since the drops were nice for players and was quite populated to begin with, how about making pvp armors have lower stats compared to bandos etc and making the armors actually worth something and making them not degrade so they're not so bad, just my thoughts.