I once had a little 6-line wrasse that was very kewl and full of personality.Sadly he went carpet surfing and never made it back.
If I was to add a new wrasse to my reef then I'd pick another 6-line. They will need a mature system with a plentiful supply of pods and such to nibble on. Very active and for the most part docile...and mine never seemed interested in crabs/snails/shrimp.
I've had dealings with a beast of a formose wrasse that so far has an appitite for all the above except snails. Thats why he now lives in my fish only system...
Lots of folks here keep wrasse with good luck....personally I'd look at the 6-line.