@johnlocke: You should get everything that you would otherwise get from Valve. If you want to level it, you should also be able to buy points on the market, but you won't be able to get many of the 'freebie' points from the predictions etc. The battle booster is almost over as well, but if you just want the items you'd get from the compendium it's totally viable to just get it now.
@klei: The combat feels way jankier. I'm constantly whiffing strikes that clearly should have hit, Batman did his "go flying 20 feet" thing towards the guy, isn't getting hit, and just stops. I'm also constantly getting caught on level geometry while fighting (often mid strike animation, exacerbating the inexplicable misses), and the camera seems way less intelligent when fighting bad guys, especially near buildings, trash cans, light poles, inside... basically around anything that it could possibly get caught on.
The fact that the basic combat IS so good and was absolutely great in the first two games just underscores the fact that it doesn't feel quite right here. Its still better than in most games, but it's not an issue of the new systems or rebalancing, rather more of a general lack of polish that permeates the entire game.
To quote Crytonomicon: Ask a Russian engineer to design you a shoe, and he'll give you something that looks like the box the shoe came in. Ask him to design something that will slaughter Germans, and he turns into Thomas fucking Edison.
It seems like the drops you get are all the drops you'll ever get. Which is dumb. Even if they reset monthly or something, it's really going to discourage trading unless people REALLY want those cards. Even if you could randomly get a card out of Dota 2/TF2 chests as a bonus or something would be preferable.