As for bugs, luckily CD Projekt provided highly significant updates that fixed them and also reworked things like police response, upgrade paths and other functionality. My only main criticism of the game and/or GOG.com, is when these updates arrived they were enormous - 20-30GB files. Whatever happened to the idea of binary patches?
So if there were a sequel I wouldn't have any qualms about buying it. But I would wait to see what the system & download requirements are first. And pretty please, learn to incrementally patch the game and don't make downloads unnecessarily large, e.g. by forcing people who don't need ultra quality textures to download them anyway.
There is no way that the likes social networks would do this shit otherwise that's for sure.
That isn't to say Java is faultless because tweaking heap and GC can be a pain in the ass and the language itself feels its age especially compared to more modern languages.
You don't have to know how the computer works, just how to work the computer.