A few of the game's alleged shortcomings I've read about are worse-than-expected AI (with both bystanders and opponents), a lack of truly divergent paths to follow (in dialogue or quests), a non-immersive game world outside the main storyline and poorly designed combat.

All of these could be improved with enough time & budget in future updates, and any one of them would make it a 'more finished' game. At this point I think CDPR will be under major pressure to do more than just fix bugs. A lot of gamers want to see significant changes in the gameplay itself, and I expect it will happen. After all, Hello Games has set expectations pretty high-- and with 1/40th of the employees to boot.