Muy interested.
So one thing since you don't decide characters moral spectrum there is literally no balance, as there can be 6 antagonists,2 protagonists, and 1 neutral it isn't really balanced. Also, you don't specify if's there n end goal or not so for all we know we're gonna be stuck on the island until the day we die. And the third problem is that characters can be op without being "op" the reason is that in most roleplay op is being too good at too many things as in most, there are a lot of skills that fall into different specializations but in this instance, if you are an expert survivalist would pretty broken as their knowledge to survive without modern technology would bring a lot of unfair benefits, like becoming leader, being able to find and collect insane amounts of supplies. So if you could fix that it'd be better
looks good but there are some problems