First thing I can think of is how high is your alcohol? If alcohol is too high it numbs the taste buds from flavor. Have you backsweetened it? If not you can try to backsweeten a test amount to see if that brings out flavor. It doesn't take much sometimes.
Here is my version of tropical dragons blood in carboy. Degassed, sorbated and sulphated, ready to clear. Not sure I am going to add Sparkolloid or another version of such. Any comments?