If you are interested in cichlids still, you could do some SA/CA cichlids if you have appropriate water parameters. You could do a single Green Terror, a Jack Dempsy with some other fish, a Convict tank, a Firemouth tank, a Geophagus tank, a EBA tank, a mix of some of these.
Or you could do a massive school of small tetras like neons.
You could also do an Asian setup with Gouramis, Loaches, Barbs (if you don't do Gouramits that is), etc.
You could do a predator tank with Hujeta gars or needle nose gars with maybe a cichlid.
I hope this will give you some ideas. Good luck!