If the devs spend all of their time buffing old mons to be on par with what we're getting now, we'll stop getting new mons. I'd rather see the collection grow with new mons than sit around twiddling my thumbs because the devs just spent the last 3 months increasing an old digimons defense so someone that hasn't updated their team recently or been working on runes can feel good about keeping that mon in their teams.
@Zerox At this point, how do you propose they release new mons without making them stronger? That's the effect of power creep, and they've already crossed it. They're not "trashing" old mons, the game has evolved and moved on, and there isn't possibly enough time to work on maintaining all of the old mons as well as releasing new ones.