@Alan McDougall,
Alan,
This is hardly a challenge to Atheists and I get the feeling this thread, based on the title is an attempt to justify Theism which simply wouldn't provide a good argument.
As always, we're at stand still on the God thing because everyone has a different idea of what god is. What God is to one isn't what God is to all. Religions are religions and their idea of God is different from other religions. So God by definition cannot possibly be explained because we'd have to know which God is being talked about before we can start.
There would be many ways we could improve the universe and I think the first would be to discover the divine within it and within each other. To improve the universe we must first improve our perception of it and quit seeking an all-powerful deity in books and religions and become enlightened enough to know that omnipresence is omnipresent in all things. Seriously, we have to start at the beginning because to start now with the plethora of religions, gods, deities, dogmas and all that other stuff, is part of the reason we're killing the universe.
So, IMHO improvement has to start from the very beginning. If all of us are seeking God in things, in books, in money, in others, how is it any of us will be able to improve a universe we cannot comprehend?
Sure there are a lot of ways one could fantasize about how to change it, but this isn't a fantasy. I think we need to start by discovering heaven and god within ourselves before we can begin to comprehend and change this universe. And if we're all fighting about who's god is the right god and who's god we have to worship and give our lives to, that in-and-of-itself will not lead to improvement of our universe... as we've been so privy to observe during our stay here in the now.
The title of this thread is misleading if in fact it is a challenge to atheists... thus an attempt to debunk it if they cannot create a more improved universe than your god.
These are my thoughts on it. Peace!