I'm liking this flashback a lot, but if I'm gonna be honest I really hope Oda skips over the actual God Valley Incident for now, and gets back to Loki and Harald. If not the flashback is going to be extremely long, and I really really want to get back to the present soon, as I'm really hyped about what's coming.
The God Valley Incident itself I feel should be its own enclosed flashback later on.