I gotta get this off my chest. Sure removing the oof sound effect is disappointing but it is kinda dumb that everyone is angry at ROBLOX for not paying 10,000 for the oof. But you gotta think, if you were a CEO of a company, would you pay 10 grand for just a simple sound effect?
You would say yes but you wouldn't. If you were a good CEO, you wouldn't waste your money on a simple sound effect.
I know, although you could probably write a script that replaces it every time a event happens (boot, starting roblox, Hotkey etc)