Need help deciding on possible additions to the tank

[Angryminer_07]

125 gallon displace mixed reef (SPS, LPS, Zoa's, 4 Nems). Current stocking includes Yellow tang, Bristletooth, powder brown, gramma, flame angel, and 2 ocellaris clowns. Im looking to possibly add some more color to the tank.

I was looking possibly at foxfaces, Melanurus wrasse, or other wrasses (fairy, flasher, etc).

1.Would adding anything at this point is ok or recipe for disaster with the tangs and angel well established?
2.Which fish or couple of fish would fit in better with the crew i currently have?
3.Would the melanurus help with my Vermetid and tube worm abundance?
4.How prone to nipping are fox faces? My angel is close to getting the book as it is and I would hate another guy snacking on the coral.

 

[Peach02]

1. I would add another tang but if you add two it will reduce aggression as its a 2v1v1 not a 2v1
2. I would recommend a good sand sifter like a yellow watchman goby and they have some pretty good colour
3. I don't know enough about melanurus specifically however I know wrasse are really good with hunting down pests
4. I haven't kept a fox face so I can't vouch for them but I haven't heard of them nipping.