hmmmm...very cool.
The idea of doing quick little 'mini events' is a very cool, fun idea and very beneficial to the game if you ask me.
It will help keep if interesting and fresh if they keep it up...maybe every weekend, or every other week.
(On a side note...I just farmed my local bulbasaur nest for the past 2 weeks, so thats kinda a bummer, but Chikoritas are welcome !)
maybe next week they can do a mini fire event