A little bit more explanation woul dbe good, you have a good idea but the most important part is to make your game interresting, you nned to have something that catches players interest, lige good graphics, flashy effcts, sound effects when player does something important. Player needs to have fun, so I would even recommend to have shorter gameplay, the during short gameplay, player needs to have fun, so for example, game like Video Game: The Game by Wolve is perfect example, short, fun, interresting, and fun. tl;dr: Short, but interresting is better than long and boring