Me and my cousin (blairdom) preordered the game and thought we should offer our own feedback, seeing there is just one. (a good one, I may add)
Been in the Open Beta and, obviously enough, we have made all sorts of combinations regarding costumes and characters and this is what we came up with so far in terms of feedback.
The customization of the costumes is huge. You can end up with a good looking insect, lizard, wolf, bird lookalike or maybe some tough looking walls of flesh smashing through enemy lines or, well...basically anything your imagination can come up with. Although there are some options which could do with some more tweaking, I guess for starters what Cryptic offered could satisfy even the most pickiest user. You cannot combine everything with everything but it is more than enough to be able to recreate that imaginary friend of yours who has been bothering you or keeping you busy during your early years.
In terms of questing some may argue that it seems that the quest don't unravel a well-built storyline that leads to a climax or a happy/sad ending but rather separate quests that have their individual story. Basically it is a bit of both, I guess. You can take missions from NPCs located in the areas you end up when you zone in but there are some civilians who need your help as well and thus offering some casual missions.
Unfortunately, we cannot offer any feedback regarding the end game content because we didn't bother to level up just one char, saving that delicious morsel for when the game actually releases. We did take part in the End Beta event, that meaning we got some of our level 10+ chars to 40 in order to battle the invasion but we decided to simply check the powers and test them out in PvP and random encounters.
Related to powers, we can talk about full customization yet again, because you can decide the colors of your powers, the place you want them to come out from (except for a few that have specific slots), and the amount of combinations you can create throughout leveling is extreme. You can have a little bit of this and that and that other thing in order to create a character to your likings.
Teaming up has been a bit hectic. People rather kept things to themselves, I guess everyone was testing out their characters but CO is a game where you can either solo most of your leveling, making it easier to go by without waiting on people to want to group or team up to speed up the process. It is a choice both condemned by some and loved by others. We always played together so that leaves little room for us to complain.
PvP wise, the game is extremely intense. There is no time to type, no time to mess around. You get to fight other heroes and the fights can take quite a while to finish because everyone's bringing something to the table. But all in all, I had loads of fun fighting my way through the arenas.
Well, having said all that I guess people can come up with some sort of a decision regarding the game. Graphics are extremely nice, the world map is quite large and there is just one huge server with multiple instances. This again might be a bit tricky for some, as people complain that it is hard to feel like you are part of a community because of being separated but there is some good news: you can switch between instances and also talk to your friends regardless of their current location. So, just switch to where your friend is being at and problem solved.
I hope I depicted the game basics thoroughly enough, but also leaving some questions only to find answers while playing. Hope to see you all in CO on release!
P.S. I read some bad reviews concerning lag, funny but we didn't get any lag and I am in the UK my cousin in Europe.