How about adding some nice Rainbows. I have 1 lg. angelfish in my 55 gal. mixed with community fish and I got some Boesmani Rainbow fish. They are really pretty and come in a bright yellow/blue or orange/blue look at pictures on u-tube of them and they get along with Angelfish and other community fish you already have. A nice school or 3-6 would look nice. If you can get some females mixed in that would be great as they are fun to watch displaying infront of the females in the early morning. Females are not as showy as the males.