Inverts

[ReefTank327]

In my 66 gallon reef tank, I have:
-12 Trochus Snails
-12 Nassarius Snails
-10 Margarite Snails (I think a few may have died)
-5 Scarlet Reef Hermit Crabs
-20 Dwarf Red Tip Hermit Crabs
-A few dwarf blue tip hermits
- 2 Skunk Cleaner Shrimp

I also have 2 ocellaris clownfish.

I would like to add some more inverts for my clean up crew. What should I maybe add more of? I was thinking of getting another pair of Skunk Cleaner Shrimp (I love them!) and maybe some sort of starfish (what type of star? must be reef safe). Maybe a few more snails (any certain type you think I should add?)
Thank you

 

[ReefTank327]

I ordered another pair of skunk cleaner shrimp, 5 more nassarius snails, 5 more trochus snails, one yellow colored dwarf feather duster, and chaeto algae for my sump.