No radar would make Trials more challenging and fun. More tactics would be used. More flanking, more communication, more coordination. I don't think camping would be a problem honestly. Campers would get destroyed by people flanking them. And if one person decides to camp, then it gives the advantage to the team of 3 not camping (essentially 3v2). And descoping snipers on a hit would actually be more realistic, but I would only descope them when their shields are down.