However... the installation of the dlc Dawnguard added a negative twist to the game. Vampires keep attacking cities and killing merchants and other npcs. Sometimes I can prevent this, but sometimes I have to reload a save, as npcs got killed. One time I entered Riften during the day and entered the general goods store the Pawned Prawn and the man Bersi Honey-Hand that usually sells goods was gone, replaced by his wife Drifta. I never even saw a fight or that merchant's body. Because of this I cannot always sell my stuff there because the wife is walking around town or the door is simply locked. Some merchants don't have spouses or a shop assistant, which means you cannot sell or buy anything from that shop anymore when the owner is dead. It's quite demotivating having to expect a fight or finding out npcs are gone. I sometimes even avoid going into cities at night because of this. I even heard from other people, that some of their cities were quite empty of npcs, so please don't let those vampires turn my cities into ghost towns.
Please let me know whether you are experiencing this too. Do you consider it a problem? Does it even stop upon completing Dawnguard?
I truly hope you will fix this problem, because it does not improve the game. It would be much better not having to worry about entering a city at night.
Ps. this is my opinion, thus this does not mean that everyone agrees or has to agree with me, but please do respect each others opinion.