If I look at this:
http://coinometrics.com/bitcoin/btix

I think WU (and all competitors) has a serious problem with their core business model. It is no more a question if but more when Bitcoin will take over the market.

My estimate is at the current growth rate (0.59 % per day - that was for the past but now the growth rate seems to escalate) it will take at most one year.

My suggestion to WU would be to turn into a company for Bitcoin ATMs very fast before other companies take over this business.