It is just a polished spy game that has something to say, but not too much and not for too long. It speaks well. But for those of us who spent years tuning ours ear to Metal Gear's strange language, this is the first small sign that it might soon be time to throw all that work away.
The completed Broken Age could well be an excellent game, and I'll be back when it's finished to review it in its entirety. But the better the game turns out to be, the more of a disservice it is to play the first act now. To play it now is to be a part of a process. To play it later is to, well, play it.