I like centered compositions...after all a mandala is extremely centered and there are many fine examples in art history of this type of artwork. Many books and teachers will say never to center your main focus...but I think it can reinforce the strength of the concept. I am not saying all paintings should be composed like this...but if the idea is very designed and 'oriental'...then the 'rule' may be broken. I say whatever works!
Here is a piece I just am in the process of putting on the finishing touches [a record of how this evolved is on my blog],..a very designed piece based on the desert mountains found nearby...'Queen of Spades Range'...24 x 24 oil on canvas.