Time for some thoughts here. I think the quality of this event has surprised us a bit. Its fire and Ice. Regardless of the region you live there's at least one side of that for things you could chase. I'm from sunny Cali. Believe it or not I have 4 good typhlosions, 5 charizard (2 maxed), and everything else where I could never be wanting fire again, but I'm chasing every swinub that miraculously shows its head.
Others have a reverse story.
I like that they've upped shellder and seel drops as well, even though not technically ice they evolve into almost purists and needed to be included for equal spread.
Also. A common lazy, lure practice sometimes done in my area is at this spot where you can park along the street and hit for stops at once. By luring all 4 stops it creates an almost constant catch rate for the full half hour. Maybe fit a spam evolution into three of your ahead, but it keeps you busy.
I'm anxious to try doing that in this event with a lucky egg. No walking distractions, traffic, navigation, or anything. Just a sit down for comfort and full focus on clean catches.