Easter eggs in games are fun. Developers like to reference titles that inspired them, the project they were working on, or things they happen to think are cool. But sometimes, we also get to see a little shameless self promotion. BioWare does this a lot, especially with Dragon Age: Inquisition. It's almost like the developer is constantly hinting at its other major series, as though to say, "Hey, when the Inquisition is done, maybe you should go fight some Reapers?"
Really, it's incredibly obvious. Just take a look at these seven Mass Effect easter eggs in Dragon Age: Inquisition and see for yourself. Maybe BioWare is trying to get us hyped up for Mass Effect Andromeda?