Yeah, that's what I found too. If these events were available the entire day it wouldn't be so bad, but for me it was usually at a time that wasn't convenient for me [to run with others] so I stopped playing as much as I did in the past. I picked it back up around a week ago and am playing more, now that a lot of the earlier monsters have received evolutions. I'm trying to build up my teams as best as I can now. It helps that I'm sitting on 200+ Magic Orbs, but I doubt the gatcha rate has improved since my absence.
I used all of my FP to pull numerous Ye Olde Deluxpie Jr. I'm sitting on 25 that are fully hyper-max'd, so I think I'm good on stat-boosting materials for a while [considering each one gives +2510 to ATK, +2850 to HP, and +50.66 to SPD].
This Smydra event, though. I'm trying to get a Golden Pickaxe Deluxpie, but the event isn't being kind. I'm not even getting Silver Pickaxe Deluxpie at a good rate. I'm only up to 57 luck and, considering the event ends today and I need 75 to evolve the Smydra, I doubt I'll make it [especially considering the dungeon costs 25 stamina]. I really hope it returns again later on, otherwise all of the farming I've done would have been for nothing...