The problem is that a lot of games simply won't be finished, and I've been disappointed many, many times. So if there is one that looks good I will play it now.
I can't see rockstar actually doing this.
Now a full 3a game with dlc and stuff would have been $100+, rockstar could have bundled in some online props or something and sold it for $120 easily and a ton of people would have bought it, there's no reason at all for them to risk this bad reputation
The problem is that most of the time the animation doesn't look great, a 3 second loop is no different than just using a picture, except that it might look worse