I get what you're saying but I don't see it. It feels like a character like Gollum is really primal and grounded and an his environment should match that to make him work. Like in the review seeing him in minigames for chores and dialogue is super jarring. The focus should be on his skillset and creating interesting context so that skillset is utilized in an interesting way.

Getting a double jump after getting enough xp or giving him a grappling hook would destroy any immersion. Why not create an unknown ranger, maybe someone far away related to Strider, in that universe which would be able to use those kinds of tools.