The last 4 you mentioned are supposedly coming before too long, starting with a better method of gym defense. They could take this so many different directions. I think now though is the time to start trying to monetize it individually, as was mentioned in previous posts. Anyone wanna go find a glut of eevees? I know 4 places in clearfield/layton that reliably produce eevees. Just $10 per person per eevee caught! Now that is a deal and a guarantee!
Already happening. Woman in NYC is offering her services as a "professional Pokémon player". $20 an hour and she will take your phone for 1-4 hour shifts and hit every pokestop while walking and catching any pokmeon she finds.
Guy in St. George turned a truck into a 9 person Pokémon tour. He drives you play, 15$ an hour
Guy in Memphis got a bus and its 18$ per person for a 2 1/2 hour safari that will include 3 parks and 2 lures.
Some woman made portable Pokeball phone chargers.