The Colossal event just finished here. Everyone in town that usually plays Pogo had the pass and were tearing through all the Regi raids. I did a total of 14 raids, and got 1 Shiny Regice. Additionally, I got a wild shiny Swinub, and a Shiny Aerodactyl and Skarmory from research.
I was finally able to catch Regirock (+1), and with the questline complete, I got Regigigas (+1). With the Unova stone, I evolved up to Candelure (+1), and with the other one I got from the box this morning, I got Simisage (+1). I also met up with my Lucky Friend, and traded for a Gible, and evolved it to a Gabite (+1). Overall, +5 to the Pokedex! I'm at 522 now. I'm only missing 15 of the released pokemon. :) Still need Heracross and Pachirisu from the guys in town.
The Colossal questline was pretty fun, I thought. It seemed to fit with how you caught Regigigas in the main games. The idea for the event probably started as something they would just release in the game, but they probably couldn't get around how to include raids. 5 free passes wouldn't be enough to ensure that free players could get all 3 Regis. Also the length? 5 free passes wouldn't be enough for a full day of raids. But then 10 free passes was probably too much to give away for free. They should've sold the ticket for half the price. But if that was out of the question, they should've increased shiny rates.
Additionally, the research quests gave an encounter with either Skarmory, Aerodactyl, or Shuckle. The "Win a Raid" quest was most common, with the "Win a Trainer Battle" as second most common. I also got "Trade a Pokemon" semi-often, too. Those were the only Colossal Research quests I saw.
I dunno... I had fun. I'm satisfied. If they do this again with Keldeo, or Shaymin Sky Form, or another Mythical, I would do it again.
Though, my biggest negative was that my iPhone 6S crashed every 5-10 minutes. I would enter a raid, crash. I would trade a pokemon, crash. I would try to battle, crash. Try to spin a stop? Crash. Open up the trading menu? crash. Crash, crash, crash. Probably 10% of my time during the event was going back to the loading screen, booting up the game.