World Religions
The only way left over to you to make your God impartial is that you must accept that your God appeared in all the countries at a time in various forms and preached your path in various languages.
This is an interesting question- why would God need to appear to anyone in various forms? If God is impartial (a belief that works for me, btw) God already exists as everyone, not to everyone. Objectification is partial representation. Now I agree you're working with the image people have in various religions, but this doesn't work for me from a logical standpoint.
Moreover every religion states that their God only created this world.
What? I don't pretend to know what every religion claims as far as creation mythology, but all the religions I'm familiar with admit that God as creator is not different according to religions. Maybe the people of other religions I talk to are more 'enlightened' by this, but every person that I know of religions other than mine, agree that God is God and religion is cultural, and prophets and avatars are messengers and representatives, nothing more.
Also, the judeo-christian creation myth indicates that God created the whole universe, and not only this world. So I really don't understand this logic.
Therefore, My attack is not on the hearts of the followers through love and kindness. My attack is on all the religious scriptures through intellectual logical analysis of divine knowledge. The unity of hearts through love can be only temporary. The unity of brains through intellectual analytical divine knowledge will be permanent. Hearts agree but brains realize. Agreement is temporary, but realization is permanent. Thus this is My first blow of My divine Conch shell for the permanent unity of all the religions aiming at eternal Universal Peace.
That has been done before, it's called "comparative religion". The problem is that some people want to be followers, and it's not so much that they will be immediately liberated by facts, it's that they are emotionally dependent on the mythology and cultural guidance a religion gives them, because people use religion to guide them when they don't get good guidance anywhere else.
Religions are not only about creation stories and mythology, they are also about cultural background and conditioning, and one 'basic' worldview will never satisfy that need.
But more power to you.