"But who cares if the protagonist's personality is more repellent than a cast-iron toilet brush, as long as he has a relatable goal. Max sets out on an epic quest to— urmm... actually what the hell are we doing here? Well, we're antagonizing the local warlord, but that's more of a hobby thing... No, that's just in aid of his main, if you pardon the pun, driving motivation, which is to make his car really nice."
Look, in every video game where there's a chain of sets of rewards, it's like: you use your gold to buy diamonds, you use your diamonds to buy gilded metal, you use your gilded metal to buy clothes... It's always clothes. It always ends with clothes. You never trade your clothes for something, unless it's other clothes.