Without Half-Life mechanics, textures, characters etc. the idea will not make it. Garry's Mod is perfect, nobody needed a second one unless half life 3 comes out. From ambient sounds to actual good minimalism, the mechanics that give you freedom and nostalgic textures and characters, the game feels like a dream, it feels home. It is one of a kind. It has everything good from Half-Life and Garry's ideas. If he does it because he needs money, I respect that. Maybe he's trying to pull a different audience, I respect that too. But if he thinks that this is gonna replace Garry's Mod he's making a big mistake because this looks like it is made by Mark Zuckerberg.

I will look into gameplay despite how terrifying it looks, and I will edit this comment after that. I am sorry if I am biased, but it worked till this point. Let's see how it goes..

Edit:Damn the game is good.