Probably should contribute:
"Vanguard: Saga of Heroes is going to be an amazing MMO."
In fairness, it has a lot of great concepts that are still unsurpassed today; their Crafting still remains the best I've ever played, their housing and boat-building are stellar (Epic Mount? Ha, I have my own Galleon), and Diplomacy remains a neat, if a little awkward third pillar of gameplay. It's just a shame Brad McQuaid didn't have someone to rein his insane ideas in and bring him down to earth (literally; the guy was higher than a kite for most of the development cycle), and that Microsoft AND Sony both rushed the game and didn't support it properly. It's free to play if anyone wants to see what happens when aiming for the stars almost worked.
"Halo Reach's Forge will be better / Halo 4's Forge will be better"
One step forward, two steps back. Still waiting on simple things like Undo, Object Heirarchy, budget-based construction (rather than having a limited number of pieces). Instead, even simple shit like magnets (object magnets don't align properly), precision placement and gametypes are a convoluted mess. And now some pieces aren't even designed to fit together? Nevermind the stuff we all want to see like terrain editing.
And a more positive one;
"Huh. That Terraria game looks sort of okay..."
What an understatement. The art style looked like the usual indie "retro chic" schlock, it was cribbing heavily from Minecraft (itself, in my opinion at the time, heavily overrated) and I didn't have a particularly high esteem for indie games anyway (having suffered through a lot of the usual "art for art's sake" crap recently).
They ended up changing the art style, taking the game in a more 'game-like' direction (more combat / exploration / customization) than Minecraft and delivering a metric fuck-ton of content in a short amount of time. I personally ended up with 1000+ hours in it (give or take a few dozen where I fell asleep at the computer).
Even though the game is now more or less dead (A console version will have new features, but I can't imagine playing it with a controller), I still feel the itch to pick it back up every now and then. It scratches all of my gamer itches.
Then I remember Starbound is coming and I start wondering if my back can take more nights in my computer chair.