I'm definitely in favor of a town meeting and handwaving that everyone has met each other! It's a small group so it works. Shiro would shown everyone how far his arm can go, and said he can take more than a couple of hits. He's an expert fighter and had to survive in the past. Everyone can notice how he's ready to take charge of shit, it comes naturally to him (like that scene of Steve in Avengers telling the cops what to do? yeah Shiro is very like that).

We'll have to see what the December update brings but when it comes to general exploring, he'll want to do that too, since so far there hasn't been any dangers to be wary of after the first week. He took a couple of days to gather food and get used to the place when he arrived but he's ready to go now. He'd suggest to organize the group so they go in different direction to cover more ground, and for nobody to go alone, minimum two people at the time.

They could also do some testing of the shards to see what they can do? Only video obviously we know that but everyone to aware that's a thing. Maybe test the distance too, do a check in when everyone reaches as far as possible in exploring.