I've tried to make an open world game before (thankfully, not externally funded; just my own passion project). I realized I was in way too deep when I'd spent nearly 50 hours just tweaking LOD crap and trying to not get distant objects to look janky when they fade/pop in, and at a certain point I realized I just wasn't having fun any more; all of my interest had evaporated.
Town exploration is like, the LAST thing Orc Massage needs. Nobody needs to make the big guy lumber around the city, requiring building LODs, map-making, creating a walk cycle for the avatar, presumably populating it with people/cars/plants/other assets, and so on. If they want you to be able to visit different places, then just make a cutesy map somewhere by the door of the massage parlor that you can click on, and then you pick a place to go to. Do maybe a short little cutscene of a taxi bouncing down a premade road, and then cut to the interior of whatever building you went to. That's if it's necessary at all to even go to other places. I was fine with just the massage parlor and keeping the scope of the game reasonable. Feature creep like this adds a grazillion hours of dev time that wasn't previously necessary.