I'm 99.9% sure we will see a huge variety of them. It would be a big mistake for R* to not add plants to the game like this.
1. Director Mode, Rockstar Editor - are their brand new features which had and have a great success...
2. If you want to fly in RDR2 - the only one way is play by a bird. Assassin's Creed Origins as an example.
3. We can't imagine nowadays a game without Photomode - modern players and community creates special accounts dedicated to gaming and shares their works worldwide via social networks as Twitter, Instagram, and YT. Not giving the players a legit way to snap and capture in-game moments will kill the respect to developers.
4. Different snapmatic and video contests for the players - is a great opportunity to motivate players to use R* Editor and show people's art and snap skills.
To sum up, and according to GTA5 experience, I believe we will see peyotes and R* Editor as well.