Down the road I do believe that there will be holiday event's and such, the gm's already stated that they "where" redoing the rng for pokemon encounters, so it would have 7 teirs of pokemon including a "limited" teir, so that they can add pokemon appearing for a limited amount of time for future event's, and pokemon swarms. so there is already a bit of evidence towards holiday events.
Though I 100% support this idea "even if it is my own" from what I have gathered, the mass majority of the community agree with it. ^^ thank you for your input, it is very much appreciated.