I think the Slime Event is neat and unexpected, but may need some tweaking. My understanding is that the Asian shards had a similar event, but they could color cloth AOS colors. That's nice since once you find the location of the slimes, you can dye bulk cloth to save, share with friends, etc.
The Tokuno slimes seem very limited. There's no way to "store" the colors for armor and weapons you might get in the future. So I could dye a full set today, tomorrow upgrade my legs and then have no way to dye that piece to match my suit. It would be better to turn on Treasures of Tokuno again and maybe make it limited to dropping special dyes only.
Overall this looks like a great publish. I am excited about the champ spawn changes. It gives a reason for us to do the spawns in non-Felucca facets. The new stealables are also nice. Too bad there's no stealable deco, but since these are consumables, that gives people a long term reason steal the items. The new plant resource is very cool as is the new craftable hitching post and filled bookcase.