So I was thinking...

Nae event was pretty unique in the way of how you went around it and what you got at the end - that 0-80 Mega Manyu was pretty damn sweet.

On that note I think it would be absolutely cool if they did a similar event, but instead of Nae chan, who is pretty much a super Manyu spirit, we would get a special Ampy spirit. Similar to how Nae was you get to raise it and grow up, at the end you get one version for your Garden, if you get to a certain amount, as well as a super Ampy that would upgrade you stat line according to how much you fed it.
0-3000 HP
0-1000 Attack
0-400 Armor

So yeah, simillar to Nae, you would get a super Ampy of one type, and some adorable animal spirit for you garden. I think that would be pretty cool :3