I think the rocks looks really good. since youre posting this under SA cichlids, i'm guessing thats what you would like to stock in it, so why not go for a south american tank? get some nice amazon swords, get some driftwood. the way you had it originally wasn't bad. it just needed more plants. I would try to use what you have already to make it work and build off of that. some thinner branch looking pieces of wood could be inverted to look like roots which gives a cool effect.