Poimandres said:
You'll notice he mentioned nothing of jump in/out co-op. That's a bit of an oversight. And other things will no doubt arise as legitimate flaws.
It's more about the "feel" of the game then anything. Reviewers hating on the controls and nuances of the game because they don't match up to expectations. If the fundamental game mechanics and play style had been altered to bring it in line with popular western shooters, I for one would be a little disappointed.
Lost Planet is unique. Defending its right to be that way is not "damage control".
*nod* Exactly!
To add my own bit to the "Damage control" remark; Personally, drop-in is not even something I care much about. It is an oversight, surely, but there are so many other features that expand beyond what I expected when this game was first announced.
Examples: Getting to choose your own personal weapon payload in multiplayer, the level of customization and other capcom references in the outfits and all, splitscreen full story co-op, a ridiculous amount of customizable taunt and team animations, akrid/mech hybrid designs, powered armors that make me recall something like the hardsuits in Bubblegum Crisis, expanded classes for weapon and grenade types... And with all the recent "It's too hard to make women troops in modern day military games, it takes too much bandwidth!" I'm kinda suprised to see the amount of female character bodies (even if many are heavily fanservicey).
There's tradeoff in every game, where one thing is made better at the sake of others. Single player modes get shunned for multiplayer, or vice versa, character types are limited because of a need to share animation, etc.
From what I've seen so far, we've possibly sacrificed a main character and some strange, varied details (can't pause in a game that MAY get additional net-born players, oh no!), in order to get a game that has all of it's modes integrated under your playable character, and we've sacrificed drop in/out for a robust set of character customization features that outweigh most similiar games in the field, plus previously absent offline co-op.
It's a "why am I focusing on a few bad apples, when I'm in an orchid of lush apple trees?" type of deal, for me...
Hopefully will have it by release day, play through the SP and then straight into MP! 
