In my opinion

Konoha Outlet has a really nice potential, but its mostly filled with packs, that most of the players avoid. Pretty much same as daily special. Still, with some minor tweaks this event has bright future.

Also lucky stars offer only 7 free draws, while lucky board 14, but the ammount of points from both gives pretty much same value (between 1.5-2 charm packs), BUT lb offers stuff from the board in addition, which heavily outweights lucky stars. You want to draw in both only when you are interested in the redeem section. I don't see a reason for those 2 events to not be in the same tier.

And this is the moment where we dont have enough tiers. Rebates in general should be considered top tier, because you get a lot, lot of free items from them (66 seals for doing literally nothing, count me in). That being said, with cave key rebate above them all because of that essence. Only exception I'd say is 'time limited seals', which is generally worse than the permament one, so it should be in mediocre tier instead.