Narrowed my list to the firefish, gramma, anthias and a mandarin. I know you don't like to make fish recommendations but there are so many different anthias and it appears that some are more difficult to feed and also eat pods which could be an obvious problem. I am pretty familiar with the needs of a mandarin having had one for a year or so. Fat and happy, eating prepared foods and one day he is a dead. I had an emerald crab in the tank and I often wonder it he snagged him while asleep. I am thinking of skipping the expensive ORA mandarin and getting a wc instead for about 1/3 the price.
Regards
In your sized tank, a wild caught mandarin should do fine, especially if you have a producing refugium. Anthias I like include: carberryi and resplendent. If feel they are moderate care. I do not trust crabs including emerald crabs