>>392809336
I hate those asset packs so much. Developing a game is hard but skipping the entire art process by using them makes the game look like cheap shovelware. 
There are two good options that developers could take without stepping into realistic graphics.
>Add detail to your textures
Gorilla Tag, Ancient Dungeon etc. stay low poly and don't add much detail but they already look better for it.
>Keep the flat textures but increase the polycount and shade smooth
I can't think of any VR games that do this? https://store.steampowered.com/app/1171980/Neverlooted_Dungeon/ is a WIP flat game that executes it well. The game itself would be a good fit for VR but the smooth simple textures and hard shadows are an appealing style I'd like to see in VR.