CQRS and event sourcing are separate concepts. I wouldn't introduce event sourcing into any product. It makes consistency very hard and expensive; more so than to ignore it and buy much larger machines. In fact, after watching people follow Udi Dahan down the ES hole a couple of times, scrap the architecture entirely and keep the CQRS bit it's a proper computer science ghetto I don't want to see again.
Packaging and micro-services have a lot more promise if you ask me, so I'm all for that. Unfortunately the complexity of some systems, particularly in the financial sector, tend to make micro-services impossible as the smallest possible abstraction is huge and everything is tangled like spaghetti.
