Well, it's dilemma for them too. You can't really win with launch DLC. Either it's insubstantial crap you can ignore, which defeats the purpose from a business standpoint, or it is substantial and ends up being a hidden price increase to get the 'complete' version of the game.
I can see ME3 feeling complete without Javik, but he adds so much to the game that it just seems cynical to cut him out for part of the audience.
I read an interesting statistic this morning in a blog post that presented achievement statistics about Giant Bomb's tracking system for achievements:
Marino said:Only 14% of players who completed Mass Effect 3 did it without picking up Javik.
Now this is only for the 360 version and Giant Bomb's community probably is on the hardcore end of things, but that's surprisingly high. 86% bought From Ashes or the Collector's Edition?