What would evidence of a God even look like?

[Angrboda]

The trouble is that God has certain attributes--omnipotence, omniscience, omnibenevolence--which couldn't feasibly be tested.  If you accept as God any seemingly very powerful being, then yes you might have evidence.  But I don't see how you could have any real evidence of an omni-max god.

What if you could find a "footprint" in cosmological order?

How would that change anything? Less than omni beings could leave footprints, too. But a universal footprint would probably be the strongest evidence you might provide, assuming that 'footprint' were directly accessible and not the product of questionable interpretation.

What if you can't have evidence for God in a similar manner that the direct physical evidence for the existence of the sun (hydrogen fusion) is extremely lethal for human form?

We can't even see the actual sun with our physical eyes for all the blinding light it emits.

What if? We're discussing the possibility of evidence; not its impossibility.