Don't try to rush this game. There is so much detail, love and information squirreled away in the side quests that simply pushing the main questline does the entire game a disservice. There are bugs and glitches, which will hopefully be addressed in forthcoming patches, but (for me, at least) nothing game-breaking, but they are overshadowed by the sheer amount of complexity and detail that CD:PR have brought to the game.
Stats and Perks look to be a very interesting mix and balance, especially given that you are unable to max everything out (which provides replayability, as there are many different ways to achieve any given goal), the crafting looks interesting (albeit a little lacking in instruction), and the game doesn't really "look" like the pre-release footage on my fairly decent system. But hell, I don't care! The gameplay is engaging, the storyline is interesting (to someone who played the original paper-and-pencil Cyberpunk 2020 game) and I am thoroughly enjoying my time in Night City.
So don't buy this game if you are expecting an "Assassin's Creed".. But if you want a Cyberpunk version of "Skyrim" then this may well be tailored to your wants.
Enjoy!