To start off with, yes it's fairly short (I clocked 5 1/2 hours) but I think that's in its favor. In a era of AAA devs padding out their games with grindy mechanics in super long stretches between dribbles of story because they think longer playing time = better game + better profits, this is a breath of fresh air. It was more like an interactive movie but also not really because you're the one looking around and doing the thinking.
Every decision you make is pleasantly weighed and valid, it doesn't steamroll you into "fake choices" like some games do by presenting a dialogue choice where the unacceptable answer just leads into the choice again, but it does give you the chance to change your mind. Some questions will actually lock out others, and create a more dynamic and natural conversations with other characters. There's also actual investigating and YOU, the player, have to figure out exactly what the right answer is but there's always that degree of uncertainty until the results of the investigation pay off and confirm you were right or wrong. Depending on what you choose you can uncover more clues or miss them entirely which might affect your decisions in what to submit in investigation reports (sheets, in game). If you don't get all of the information you need it will handicap you in your investigation, so you have to employ some real thought into it and be very thorough.
The only con I can think of is the walking speed is pretty slow, which can be kind of annoying in spots but also lets you get into the moody noir vibe better as well and take in those pretty amazing pixel environments. So it's a good-thing-bad-thing in the end.
And the story is actually well thought out. It doesn't have a whole jumble of disperate things, everything leads back to the main root and is part of each other with small, personal actions at the bottom, and large, interplanetary complications.
