Reincarnation in DxD with wishes

Some people complain about MC being too powerful; they can leave the story whenever they want. It's been decided that the story will be a harem. If MC being powerful and sometimes stupid bothers you, feel free to stop reading and reviewing. I usually speak more heavily, but I might get banned.

and I am gonna delete all bad reviews so like I said if you didn't like it go away.

Now that I've said what I wanted to say, we can move on to the questions and answers.

Should Venelana be added to the harem?

What kind of power should I give to the MC?

What are the things that need to change about this fic?