On the contrary, I got the majority of my stuff on the old system. With every nerf that came along, and let's not forget this is the second or the third in this regard, my gains decreased. Now, with the new system in place, I just got three shards from 20 fights about five minutes ago - which basically means I am not going to get any more event girls from now on, given only a week time to do so. Which is okay, I guess, because I only need the ingame currency to upgrade girls, but:
This is a Pokemon Expy. It's a gathering game. If the game mechanics themselves fundamentally oppose me gathering the girls, then what's the point of playing?