It is commonly advised and encouraged in game design to frontload the first hour of your game with as much presentation and polish and pizzazz as you possibly can, as that first hour is the part where you are doing everything in your power to entice a player to carry on through into the rest of your game knowing that what they just saw hooked them in.
It's also a good idea to save some of that sauce for the rest of your game.
It's also a good idea to save some of that sauce for the rest of your game.