Class G is Class G, period.
Oh well, might as well rise to the challenge.
Flying is about safety. Period.
If you know there is an obstacle 1,000ft above the ground nearby and you can't see it, you climb to a height in excess of 1,000ft. That's safe.
If you suspect that there is a good chance of something in the air ahead of you, and you can't see it, you make a slight detour. That's safe.
Why are airfields - licensed or not - marked on charts? Not so as you can land there - my 530m of grass would be a worse choice in an emergency than the longer flatter fields by the nearby A71! and it doesn't indicate PPR etc - but so as you know where there might be "obstacles in the air", and so you can choose to avoid them! That's safe.
Please don't get me wrong. I am a microlighter through and through. That means we hate controlled airspace and its continual extension (possibly we hate all control!!!). Less control the better - but it does come at a price: more responsibility - to other pilots and their pax, our pax, the people on the ground and - at the end - ourselves.
Very best wishes,
fly safe