This is impossible to answer, but I am sure Rockstar has learned their lesson from all the GTA Online exploits...
What I am hoping for is some cool single player (legit, developer made) cheat codes.
Someone I was talking to the other day brought this topic up and we had a light debate on it. It seems like a lot of people are under the assumption that the community will be just as bad as GTA V's was. I don't see it. This game has never been something to appeal to kids which is a good thing. Heck, even GTA should never have appealed to kids but it did.
So the community will be for the most part made of adults and that is a good thing in my book.
Hmm. Well I can't say I would have thought this would be an option but really, based on the information we know right now, anything is possible. I will be shocked if they do this or something like it though. Doesn't seem to be in their taste.
I am not a fan of creative players like this unless it is for online. I feel like doing this in the story will take away from it. Cause like online, you would be the same guy/gal and it wouldn't feel as meaningful for the main story (single player/campaign).