You make quite the point here. That is the advantage I see for DDD; you have dependency on service that may change, DDD will make your life easier when switching, otherwise there will be weeks of rewriting code. And what happens during transition times (thinking about CRM for example) where you have to keep connected to both systems?.

This said, in my situation it's like trying to kill flies with a muon cannon (fyi. this gun is fictional and it's exaggerated to drive the point), it's cool'n's*it but the same could have been done with a newspaper or your hand. To maintain the muon cannon you need the entire Fermilab team, your hand... well, it's your hand.

Apologies for the exaggeration, can't avoid it :D