In general, please don't come to Meta with a request to un-hold a question. There is a review queue, and many of the same people who will see the meta post will already have seen it in the review queue (for example, like I did). But this is your first post on Meta, so lets give you the benefit of the doubt.
I think the question is still too broad. The bottom line for me, and keep in mind everyone will have their own metric for what the limit of 'too broad' is, is whether or not a question can be reasonably answered in 2,000 characters. I know its a kind of arbitrary limit, but in my experience, a good answer rarely needs to be that long.
So getting to the pros and cons of gravity levels, there is simply a lot to discuss. Even just from a military point of view, gravity affects many things. For space battles, it affects the density of the atmosphere, the speed of orbits, the distance from the planet of geostationary orbits. From the ground it affects the terrain by erosion, the composition and density of the atmosphere again, the ability of low gravity troops to survive, the viability of projectile vs energy weapons, etc.
When I review a question (in 15 sec or so, mind you) I total that up and think if how much I could write. When I looked at your question, I thought it was too much to write, so I rejected the re-open.
My advice to you going forward is to get even more specific. But also, please be sure you are looking around the site for other answers. There are questions about low gravity vehicles, buildings, storms, the human body, and many more. These should give you better idea of the scope of the question you should be asking.
Hope that helps.