Benchmark maybe yes if they've enough resources and times for it (gamers can evaluate their PC by using diagnostic tools), Demo is the last choice to do (It's unnecessary if you think your product is good enough and
almost of target group are satisfied or love it.)
1st priority is
standard qualities of RPG genre must be for PC gaming that I'm trying to talking about and balancing of the main essentials, important priority jobs to do for the best game (at least 1 year after launch) of RPG genre.
I saw this game in trailers, gameplays. NPC've their own activities and some of them activated events when you're closed. (so many scripts, models, textures, AI activated especially so many actors that need proper hardware components)
Even Operating systems still need patches, optimized after launched but the most important things is
stability and most of consumers're satisfied at launch.
I'm still hesitating to build my new PC for this game, I might buy another copy for PS4 until mods came out and main things are settled (that need more powerful components than recommended) at that time I can get better offer and performance for my new PC budget.
I'm thinking about VR, hair works, DSR etc. for this toy